chemical factor 中文意思是什麼

The results show that, the interfacial bonding strength of new and old concrete is evidence lower than the new or old concrete itself. besides the dimension and roughness of bond interface, the chemical reaction degree at the interface is also the main factor

分析結果表明：新老混凝土的界面粘結強度除了受老混凝土界面的尺寸及表面結構、粗糙程度影響外，還與新老混凝土粘結界面間發生化學反應的強弱有關。

Occupational exposure to chemical fumes and organic dusts ( such as wood, mining dusts ) can also be a risk factor

另外，在化學煙霧及有機塵埃（如木或礦塵）的環境下工作，亦會引致慢性阻塞性呼吸道疾病。

As the agricultural nfs is the most important factor for water environmental deterioration and lake eutrophication in china, more and more scientists and technologists focus on the control countermeasurc and pollution mechanism of agricultural non - point source ( nfs ). based on the investigation of natural resource and agricultural distribution, the loss rule of nitrogen and phosphorus in the typical land of qiandao lake watershed and distribution rule of the phytoplankton and physico - chemical characteristic in the lake were studied, and the input loading of nitrogen and phosphorus was also calculated by the annagnps model in this thesis. according to the routine monitoring data of the water environment in qiandao lake from 1989 to 2001, the concentrations of toxic substance and heavy metal were under the monitoring limit, but the total nitrogen ( tn ) and total phosphorus ( tp ) were much higher than the criterion for lake and reservoir

本文調查了千島湖流域的自然資源和農業生產情況，研究了典型坡地降雨徑流中的氮、磷污染物的輸出規律，利用annagnps模型估算流域農業非點源污染物輸入負荷，並在千島湖內設點采樣，對水質理化指標和浮游植物群落進行系統的研究，得出以下結論： 1989 2001年間的水環境常規監測資料統計分析表明，有毒物質和重金屬濃度長期在監測下限內， no _ 2 - n 、 no _ 3 - n 、 nh _ 3 - n年平均濃度均符合類標準，但湖泊水庫特定項目tn和tp濃度分別為超類和類，呈嚴重超標狀況，湖區主要污染因子是將導致富營養化的物質tn和tp 。

This text completely and systematically studies the status and the development of the pyrolysis and the fluidization of biomass, which distill the bio - oil in the domestic and international area, as well as the existing problems. this thesis primarily include following aspects : ( l ), by experimenting and measuring the energy ( heat value ) and the content of c, h, n chemical element of right 20 kinds of common biomass, on the base of the experimental result, and respectively established the biomass energy predict experiment formula with the element of h and c is from change, and passed the ro. os examination, which provides the basis and convenience for flash pyrolysis fluidization device energy to convert the rate to compute with biomass energy utilization calculation ; ( 2 ), proceeded the tg and dtg experimentation equal velocity ( 10 ? / min, 20 ? / min, 40 ? / min, 60 ? / min ) heating and constant temperature heating by studying on eight kinds of biomass samples, according to the experimental data and arrhenius formula, we established the dynamics model of pyrolysis of, then, using the goast - redfern and p function, we also solved the dynamics parameters and analyze out every kind of biomass ' s frequency factor and parameters of activation energy, and established the every kind of dynamics model of pyrolysis of biomass, all of these provide the theories and basis to make sure the reactor ' s flash pyrolysis work temperature scope design and the describing of pyrolysis reactor dynamics ; ( 3 ), in order to study and ascertain the process of heat completely getting to pyrolysis time of varied size biomass particles, we observed and measured the ratio of length and diameter ( l / d ) with the varied biomass through electron microscope, we concluded the l / d ratios usually is from 5. 0 to 6. 0, the average is 5. 3 ; ( 4 ), we studied the process of biomass transiting and the theory of complete pyrolysis time with the theory of complicated heat field, we got the time ( t ) of the varied size biomass particles arriving to complete pyrolysis, and we knew that the complete pyrolysis time and the time which get to the biggest production ratio are identical, all of these studies provide the theory base for design and forecasting the flash pyrolysis reactor solid state resort time ; ( 5 ), according to the above experiment result, synthesize to make use of the engineering the mechanics, engineering the material, machine the design to learn the principle, deduce, establish the theory of rotation cone flash pyrolysis reactor material resort time ( t ) and reasonable rotation velocity ( or frequency ) relation theory ; and ( 6 ), we gave the reactor ' s smallest cone angle certain, reactor cone wall strength design theory, the reactor production ability theory, the power design method and the critical rotation velocity theory

本文較全面、系統地綜述了國內外生物質熱解液化制取生物燃油技術研究發展現狀及存在的問題，主要研究內容有： （ 1 ）實驗、測定了20種常見生物質的能量（發熱量）和c 、 h 、 n元素含量，根據實驗結果分別建立了以h和c為自變量的生物質能量預測經驗公式，並通過r _ （ 0 . 05 ）檢驗；為閃速熱解液化裝置能量轉化率計算和生物質能量利用率計算提供了依據和方便； （ 2 ）選擇了8種生物質試樣作了等加熱速率（ 10 min 、 20 min 、 40 min 、 60 min ）和恆溫加熱的tg和dtg實驗，根據實驗數據和阿倫尼烏斯公式建立了生物質熱解反應動力學微分方程，並採用goast - redfem積分法和p函數對其動力學參數進行了求解，解析出各種生物質的頻率因子和活化能參數，進而建立了各種生物質的熱解動力學模型，為科學確定反應器的閃速熱解工作溫度范圍及熱解反應動力學描述，提供了理論和依據； （ 3 ）為研究和確定不同尺度的生物質顆粒中心達到全熱解的時間，在體視顯微鏡下對不同粒度的生物質顆粒的長徑比進行了實驗觀察和測定，得出生物質的長徑比（ l d ）一般在5 . 0 6 . 0之間，平均為5 . 3的結果； （ 4 ）採用復雜溫度場傳熱學理論對生物質傳熱過程及充分熱解時間理論進行了研究，解析推導出了不同尺寸生物質顆粒中心溫度達到充分熱解溫度的時間（ t ） ，得出了理論推導的充分熱解時間與最大產油率的熱解時間相一致的結果，為閃速熱解反應器固相滯留時間設計和預測提供了理論依據； （ 5 ）根據上述實驗結果，綜合運用工程力學、工程材料、機械設計學原理，推導、建立了轉錐式閃速熱解反應器物料滯留時間（ ）與轉速（或頻率）合理匹配理論； （ 6 ）提出了轉錐式閃速熱解反應器的最小錐角設計、錐壁強度設計、生產能力設計理論和功率計算方法及臨界轉速理論等。

This paper chooses the indicators of economy and land quality input which has influence on the output, depending on cd - productive function to establish the function between input and output : y : productive forces of the cultivated land f : input of the fertilizer and agricultural chemical i : input of the irrigation l : input of the labor q : input of the land quality a : the level of average management t : the level of changing management a, b, c, d, f : productive elasticity coefficient the factor of the land quality includes texture, content of the organic matter, degree of the pickled, the structure of the soil

本項研究選擇了影響農用地總產出的經濟投入指標和土地質量投入指標，藉助c - d生產函數，建立土地投入產出的函數關系： y = a ? e ~ （ ft ） ? f ~ a ? i ~ b ? l ~ c ? q ~ dy為以土地總產值表示的土地生產力f為化肥和農藥的投入i為灌溉投入，即灌溉所需用的水電費l為勞動力投入（考慮了農業機械投入的修正） q為土地質量投入a為平均管理水平t為變化的管理水平a 、 b 、 c 、 d 、 f分別為各相應生產要素的產出彈性系數其中，土地質量因子包括表土質地（ t人有機質含量矚入鹽漬化程度px土體構型p ）等。他們之間的關系為： q （ a ； xt a 。

Discussion in practice of the forensic material evidence, one that is chemical disposal special material to examine, for example material treated by formalin fixation and paraffin wax is needed to distinguish the source to identificate. because the formalin influence dna to be drawn directly, fixation time is the important variation factor among them

討論在法醫物證實踐中，經過化學處理的特殊檢材，例如福爾馬林固定后的石蠟包埋組織塊和切片的個人識別和來源鑒別，因為福爾馬林介導的甲基化直接影響dna提取的效率，其中固定時間是一個重要的變異因素。

Effects of boschniakia rossica extract on the serum antioxidative activities and tumor necrosis factor in initial stage of rat chemical hepato - carcinogenesis in rats

草蓯蓉提取物對大鼠肝癌前病變模型血清抗氧化酶活性及腫瘤壞死因子的影響

The major factor was the technology of agriculture production in the influence factors of the economy growth of planting of hebei, the contribution ratio to economy growth in planting was 19. 3 %, in which the improved seed, chemical fertilizer, plant protection was 4. 3 %, 2. 5 %, 2. 3 % respectively ; manage technology was 9. 8 %, in which the policy was 4. 0 %, then manage regulation was 2. 9 % and manage method 2. 9 % ; the service technology was 9. 3 %, in which the agricultural extension, the culture education, the agricultural science and research, and material supply were 2. 5 %, 2. 4 %, 2. 3 %, and 2. 1 % respectively

本文通過對近十年河北省農業勞動生產率和土地生產率指數比較研究，得出比較適合河北省農業發展方向的科技進步模式是以提高土地生產率為主導的模式。近十年來，在影響河北省種植業經濟增長的因素中，主要是農業生產技術對種植業經濟增長貢獻份額較大，為19 . 3 ，其中，良種、化肥、植保的作用份額較大，分別為4 . 3 ， 2 . 5 ， 2 . 3 ；管理技術為9 . 8 ，其中方針政策為4 . 0 。

Plastics piping systems. glass - reinforced thermosetting plastics pipes. determination of the relative flexural creep factor following exposure to a chemical environment

塑料管道系統.玻璃纖維增強式熱固性塑料管件.在化學環境中暴露后相對撓性蠕變系數的測定

Determination of the chemical resistance factor for thermoplastics pipes ; polyolefin pipes

熱塑性塑料管道化學阻抗的測定.第1部分:聚烯烴管道

3. investigative objects of toxicology extend beyond the chemical factor. it emphasizes mechanisms of reverse effects induced by physical and biological factor and their prevention and treatment. the development of neurology improves knowledge of neurological and behavior toxicology

學是利用毒理學的概念和方法，研究軍隊平戰時所處環境中外源性化學物及生物、物理因素的有害作用及機理，研究防治措施。

Among them, the damage due to physical results from formation stress and external force exerted on casing ; chemical damage from corrosion is in the process of casing " s idle and use, and human factor involves incorrect design, manufacturing and operation

其中，套管的物理損壞包括地層力對套管的破壞和施加外力對套管的損壞；套管的化學損壞包括套管閑置被銹蝕和套管使用過程中被腐蝕；套管的人為破壞因素包括設計不當、製造不當和施工不當。

Influence factor of chinese leather chemical industry competitive power

中國皮化行業競爭能力影響因素淺析

Analysis of canonical correlation between weather factor, chemical constitutions, and aroma and flavor of tobacco leaves

氣象因子與煙葉化學成分及香吃味間的典型相關分析

The solution background that resulted from the chemical interference, would be the primary factor that effected the sensitivity. especially in the present microfluidic system, the chemical background which was usually inevitable because of the carrier solution, would be eliminated by means of using air as the carrier flow, thus a great signal noise ratio ( snr ) and a great sensitivity could be obtained

在微量分析和超微量分析里，化學干擾產生的溶液背景是影響靈敏度的主要因素，尤其在微流控系統中，載流溶液的背景不可避免，用空氣作載流就可以消除背景而獲得高信噪比和高靈敏度。

Nano bio - chemical technology : with nano bio - chemical technology, the super fine nourish factor can effectively and quickly penetrate into deep skin, highly resist oxidation, prevent allergy, eliminate yellowish complexion, leave skin moisturized and healthy

納米生化技術:超微細滋養因子利用納米生化技術有效迅速滲透直達肌膚深層，高效抗氧、防敏、去黃，肌膚更潤澤健康

Alkaline zinc - manganese battery is widely used all over the world it has good performance of storage ， low cost ， stable discharge and convenience of carrying the sealing of the battery is a crucial factor to the performance of the battery due to the disadvantages of present sealants ， leakage of electrolyte often happens what ’ s more ， the sealing capability affects the performance of the battery the way to raise the sealing capability is to search for a good additive ， which can improve the sealing capability through adding according to chemical principles ， this article picks out ptfe and nylon66 as additive adding ptfe or nylon66 into the pitch can improve the sealing capability of the pitch at the same time ， the temperature ， the time ， the amount of addictive ， the way to drop temperature and the time of churning all should be considered by testing the constitutions ， softening point ， moving degree and length of needle of various pitch samples ， we can compare the properties of different sealants can be studied by using of x - ray, the constitutions of the pitch can be indicated which can help us to explain these changes this article includes ： testing the constitutions ， soften point ， moving viscosity and needle penetration of various pitches ； raising the sealing capability by adding ptfe nylon66 into the pitches ； testing the constitutions ， soften point ， moving viscosity and needle penetration of raised samples ； analyzing and discussing the basic principles of this method it is showed that soften point ， moving viscosity and needle penetration of pitches are increased by adding ptfe nylon66 and the discharge time ， initial voltage ， capacity of battery with pitch raised by nylon66 are good and get to the requirement of gb t7 1 1 2 in a11 the method proposed in this article is available in practical industry use

通過測定改進瀝青的軟化點、運動粘度和針入度等指標參數來比較不同的添加劑及不同的添加條件對瀝青封口性能的影響。本論文的主要研究結果為：系統測試了多種瀝青樣品的組成、軟化點、運動粘度、針入度；對市售瀝青分別添加聚四氟乙烯乳液、有機硅樹脂和尼龍66進行改進，制備了改進產品；對改進瀝青的組成、軟化點、運動粘度、針入度進行了測試和比較；使用改進瀝青組裝成電池並對電池進行恆電流放電測試、短路電流測試和電池漏氣、漏液性能的測試；對瀝青改進的原理進行了分析和討論。實驗結果表明：在瀝青中添加尼龍66和聚四氟乙烯乳液對瀝青的封口性能有明顯的提高；通過對工藝條件的不斷改進，目前的工藝條件已完全可以用於實際生產操作；以添加尼龍66改進的瀝青為封口劑組裝成的電池完全滿足堿錳電池生產的需要，且電池電容量、短路電流等指標均達到gb t7112標準要求；本文提出的改進方案，通過驗證是一種效果好、實用性強的方法。

Firstly, in microanalysis and ultra microanalysis, the solution background that resulted from the chemical interference, would be the primary factor that affected the sensitivity

尿酸樣品在酶反應器中產生的過氧化氫流經微反應器時，產生化學發光，據此實現對尿酸的測定。

The process of devanadium is a high temperature chemical reaction process and the mechanism of reaction is very complex, the affect factor is also so many, and the influence by the variety of raw material and technics condition is also great, so it is very inconvenient to operate manually

轉爐提釩是我國主要的生產方式。轉爐提釩是一個多元多相的高溫化學反應過程，反應機理復雜，影響因素眾多，受原材料、工藝環境變化的影響較大，不便於人工控制。