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1·The atmospheric concentration of methyl chloride (CH 3Cl) is very low, only at 10 -12 (V/V) level.

氯甲烷在大气中的浓度较低，仅为10 -12 级别。

2·Atmospheric histories of halocarbons from analysis of Antarctic firn air: methyl bromide, methyl chloride, chloroform, and dichloromethane.

从南极永久性积雪空气分析大气卤烃的历史：甲基溴化物，甲基氯化物，氯仿和二氯甲。

3·Experimental results were reported here regarding the gas phase conversion of CTC to methyl chloride by using transition metal salt composite catalyst embedded on active carbon.

报道了以活性炭为载体，以过渡金属无机盐为复合催化剂，在气相条件下四氯化碳与甲醇反应制备(一)氯甲烷的研究结果。

4·Through calculating the critical parameter and relative data of methyl chloride high pressure thermal chlorination, the phase of this reaction has been analyzed with some conclusion being obtained.

通过对一氯甲烷高压热氯化的临界参数及相关数据的计算，对反应的相态进行了分析并得出结论。

5·Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.

由苯与异丁酰氯在无水三氯化铝作催化剂的条件下制备苯基异丙基酮。

6·The various effects on synthesis of N-methyl-carbamyl chloride were studied. Temperature is most important one.

介绍了影响N -甲氨基甲酰氯合成的各种因素，其温度是主要影响因素。

7·The preparation method of the coordination methyl tin mercaptide compound comprises steps of preparing the methyl tin chloride and preparing the methyl tin mercaptide.

所述配位型硫醇甲基锡化合物的制备方法包括制备甲基锡氯化物、制备配位型硫醇甲基锡步骤。

8·The said titanate is one of the kinds such as methyl titanate, ethyl titanate, butyl titanate, titanic chloride and titanoxy sulfate.

所述钛盐是指钛酸甲酯、钛酸乙酯、钛酸四丁酯、四氯化钛、硫酸氧钛中的任一种；

9·Methods 1-Methyl-1,2,3,4-tetrahydroisoquinoline was synthesized from phenethylamine through three steps:acetylation with acetyl chloride, cyclization with PPA and reduction with potassium borohydride.

方法以苯乙胺为原料，经酰化反应得乙酰苯乙胺，在多聚磷酸的作用下环合得1-甲基-3，4-二氢异喹啉，经硼氢化钠还原得1-甲基-1，2，3，4-四氢异喹啉。