alkanes 中文意思是什麼
alkanes
解釋
鏈烷烴-
The alkanes are generally inert to ionic reagents.
烷烴一般說來對離子型試劑是不活潑的。 -
The alkanes are non-polar.
烷是非極性的。 -
The general uses of alkanes may be divided into three categories.
烷的一般用途可分為三個方面。 -
Alkanes are resistant to attack by oxidizing agents generally.
烷烴一般對于氧化劑的作用是穩定的。 -
The straight-chain alkanes exacerbate the problem of engine "knock".
直鏈烷烴使機器的「爆震」問題更加嚴重。 -
The alkanes form a homologous series of general formula h.
烷形成是有通式H的同系列。 -
The gradation in the physical properties of the alkanes is typical of a homologous series.
烷烴物理性質的逐漸變化是同系列的特點。 -
Alkanes can be chlorinated or brominated by treatment with chlorine or bromine in the presence of visible or uv light.
烷在可見光或紫外光照射下，用氯或溴處理才能氯化或溴化。 -
Advances in the conversion of light alkanes to light alkenes
低碳烷烴催化轉化制取低碳烯烴反應工藝的研究進展 -
After the decarboxylation process the alkane produced can be degraded or "cracked" =to lower carbon number alkanes.
脫羧基作用后，所形成的烷烴能被降解或「裂解」成低碳數烷烴。 -
Chemical fossils ( e. g. alkanes and porphyrins ) are often the only evidence for life in rocks of precambrian age
化學化石（烷烴和卟啉）是前寒武紀地層中生命存在的唯一證據。 -
The results showed that the estimation of the dead time and the retention times of the normal alkanes and the further prediction of the retention indices of unknown components were quite satisfactory when the number of the known components included in calculation was not too small
結果顯示，在已知組分不是太少的情況下，該方法計算的死時間和正構烷烴的保留時間與實驗值吻合，預測的保留指數也有較高的精度。 -
Abstract ： in order to obtain the retention indices of unknown components in gas chromatography, a method using retention indices and retention times of known components to calculate the dead time and retention times of the corresponding normal alkanes was developed
摘要：提出在部分組分已知的氣相色譜灰色體系中，利用已知組分的保留指數和保留時間推算死時間和正構烷烴的保留時間，再計算未知組分保留時間的方法。 -
Bohai ; core sediment ; n - alkanes ; fatty acids
渤海柱狀沉積物正構烷烴脂肪酸 -
Size distribution of n - alkanes and polycyclic aromatic hydrocarbons in urban aerosol of guangzhou, china
廣州市空氣顆粒物中烴類物質的粒徑分佈 -
Development of research on the coupled catalytic conversion of light alkanes and carbon dioxide
低碳烷烴催化脫氫與逆水煤氣變換偶合轉化的研究進展 -
The main effect factors include : 1. microbial species, which seem to have different degradation rate under varied circumstances and n - alkanes ; 2. physical and chemical properties of crude oil itself, which have an important effect on biodegradation, such as conglutination, boiling point, refractive index, ingredient and concentration of the oil ; and 3. culture condition of microorganism, under which the degrading activity of microorganism will be affected by surfactant, light condition, sorbent, nutrition, co - metabolite, oxygen, temperature and salinity during the inoculation of selected or indigenous microorganisms
其中主要影響因素包括：菌種的影響，菌種在不同的環境中和對不同碳鏈長度的碳氫化合物表現出不同的降解效率；石油物質本身物理化學特性的影響，如石油物質在水體或土壤中的濃度以及石油的粘度、沸點、折射率等特性；生存環境條件的影響，在接種入高效率的降解菌或利用土著微生物進行降解時，降解率受到生存環境中各種條件的影響，如表面活性劑、光照條件、吸附劑的利用、營養鹽、共代謝底物、氧氣、溫度、鹽度等。 -
The molecular structure of alkanes is described by anovel molecular subgraph coding method, recently developed in this laboratory. it has been shown that there exist very good quantitative structure property / function relationships ( qspr / qsfr ) between the coding and 7 thermodynamical functions and 8 physical properties of alkanes
在拓撲不變量的基礎上直接將子圖分類、計數、編碼，提出了一種新分子拓撲子圖指數，已數字化的子圖編碼部分保持具體分子結構的直觀信息。 -
This paper presents the results of investigating the destructive and oil - displacing capacities of species w3, g12 and s11 for waxy crude oil from production well chang 74 : reduction of wax content by 7 - 11 % and of interfacial tension by 10. 7 44. 0 % ； reduction of high carbon number normal alkanes and enrichment of low carbon number ones ; production of gases ( mainly co2 and n2 ) and acids ; enhancement in oil recovery by 8. 2 10. 6 % ( in core experiments )
本文報道這幾種菌在油藏條件下的生長情況，與昌74井原油的作用及巖心驅油結果：使原油含蠟量降低7 % 11 % ，使界面張力降低10 . 7 % 44 . 0 % ，使高碳數正構烷烴含量下降，低碳數正構烷烴含量增多，產酸產氣，提高巖心採收率8 . 2 % 10 . 6 % 。 -
Regioselectivity in catalytic oxidation of alkanes using zeolite - encapsulated catalyst
沸石負載釩絡合物催化劑對烷烴氧化反應的擇形選擇性
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