滯留率 的英文怎麼說
中文拼音 [zhìliúlǜ]
滯留率
英文
retention rate-
Spatial distribution and time scales of atmospheric diffusion over beijing area are revealed by means of a random walk simulation model and practical meteorological data with a specified emission source from the city. results show a southward transport pattern for wintertime while a northwest transport of pollutants in summer. the area is the least evidently influenced by the emission source in spring, while the largest in autumn. the time spent for instantly emitted material removing from the model domain varies from winter - spring to summer - autumn. the former was shorter one of less than 20 hours ; the latter was longer one of approximately 30 hours. distribution of occurrence probability for different removal times was not symmetry. reducing slowly at the end of longer removal time, probability exists for pollutants remaining in this area a long time
結果表明，冬季示蹤物偏南夏季偏西北的輸送明顯春季擴散影響范圍最小秋季最大。示蹤物從200km200km模式區域輸出的平均時間去除時間明顯分為冬春季和夏秋季兩組，前者較小，平均在20h以下，後者較大，平均約30h 。不同去除時間出現的頻率分佈是非對稱的，在長去除時間一側，出現頻率下降緩慢，顯示污染物有在該區域內長時間滯留的可能。The results indicate that : purification efficiency of phenol was better of wetland soil in which was not reed - planted ; both the residence time of phenol in soil and the range of particle size affected the adsorption ability of wetland soil ; through changing soil infiltration and physicochemical properties of rhizosphere, reed can affect adsorption ability of wetland soil on phenol
結果表明，未生長蘆葦的濕地土壤對苯酚具有較好的凈化效果；苯酚在土壤中滯留時間、土壤的粒徑范圍均影響濕地土壤對苯酚的吸附能力；蘆葦能改變土壤入滲率和根際土壤的理化性質，從而影響濕地土壤對苯酚的吸附能力。On the other hand, the port state control detention rates for the hong kong registered ships remain well below the world averages
另一方面，香港注冊船隻的港口國監督滯留率亦遠低於世界平均比率的水平。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。Diesel fuel and petrol filters for internal combustion engines - filtration efficiency using particle counting and contaminant retention capacity
內燃機用柴油燃料和汽油過濾器.用粒子計數和污物滯留量測定過濾效率The detention rate of port state control in china is relative low in the tokyo mou. the main reason is that we are too much worry about improper detain of ship which may lead to administrative suit while we make decision on dealing with the deficiencies found in ship ' s safety inspection
我國開展船舶安全檢查的滯留率在《東京備忘錄》中相對較低，主要原因是我們在進行船舶安全檢查處理決策時顧慮較多，擔心不適當扣船（滯留船舶）而引起行政訴訟。The simulations results show that the spoiler is available to make the fuel and the oxidizer coming from the former to stay in the cavity for a long time, to let the fuel and oxidizer mix and burn completely. since there is a high temperature zone forming by vortex in the middle of the motor, it required a restricted thermal protection. the plate with holes decreased the vortex function in the cavity, which could not promote the combustion efficiency, but to decrease temperature in the cavity and be benefit to thermal protection of the wall
計算結果分析表明:擾流板可以使燃料和氧化劑在擾流腔內的滯留時間加長，促進燃料與氧化劑的摻混燃燒，提高燃燒效率，但由於渦流在發動機的中間部位形成了高溫燃燒區域，致使局部燃料和絕熱層燒蝕速率增大，加大了熱防護的難度;孔板結構減弱了擾流腔內迴流區的漩流作用，不能增加推進劑燃燒效率，但可以使擾流腔內的溫度降低，給壁面熱防護帶來好處。By testing several groups of data, it is well known that the number of the customers in the output buffer is not too much even if the input probability of the three queues is very large. so we must try our best to design the input buffer when we optimize cioq program
測試幾組數據可以看出，即使三個隊列的來到概率很大時，輸出端緩沖庫中滯留的顧客也不是很多，因而在優化cioq設計方案時，要盡量設計好前端即輸入端緩沖庫。Durability of wood and wood - based products. preservative - treated solid wood. determination of the penetration and retention of creosote in treated wood
木材和木基製品的耐久性.經防腐劑處理的實心木材.經處理的木材中雜酚油滲透率和滯留量的測定Liquids filtration. porous membranes. retention rate of ultrafiltration and nanofiltration membranes
液體過濾.多孔薄膜.超濾和超微濾薄膜的滯留率Core losses are caused by an alternating magnetic field in the core material, thie losses are a function of the operating frequency and the total magnetic flux swing, the total core losses are made up of three main components, hysteresis eddy current and residuallosses, these losses vary considerably from one magnetic material to a - nother, applications such as higher power and hither frequency switching regulators and rf designs require careful core selection to yield the highestinductor perfor - mance by keeping the core losses to a minimum
鐵損是由於在鐵芯中的變更磁場院所造成，這個損失與操作頻率及總流動的磁通量有關，總鐵損由三個成份組成，磁滯損，過流損及殘留損，這些損失因磁性材料不同而異，在如高功率切換調整器和rf的設計需要小心選擇鐵芯種類以降低鐵損使電感的表現最佳。But in the example of snow retention, evenly spacing both rate - of - fall and rate - of - residence - in - the - clouds values will give different distributions of result
但是在雪的滯留試驗上，將雪的下降率參數值與雪在雲層里的停留率參數值都設為均等的間隔將會得出不同的結果分佈。Full - flow lubricating oil filters for internal combustion engines - methods of test for initial particle retention efficiency, life and cumulative efficiency gravimetric method
內燃機滿液流式潤滑油過濾器.初始微粒滯留效率壽命和累積效率試驗方法The international voyage company pass to into practice the ism code, obtained to show the result, international voyage ships to check the inside in the port country stay the obvious descent, company safety of rate to manage the obvious descent of rate of occurrence of obvious exaltation, trouble of level
我國國際航行公司通過實施《 ism規則》 ，取得了顯著成效，國際航行船舶在港口國檢查中的滯留率明顯下降，公司安全管理水平明顯提高，事故發生率明顯下降。分享友人