The methyl group (CH3) attached to the methionine sulfur atom in SAM is chemically reactive.
甲基基团（CH3）附着在SAM中蛋氨酸硫原子具有化学反应性。
A colorless solid alcohol, CH3 (CH 2) 11oh, used in synthetic detergents and pharmaceuticals.
一种无色固体醇，分子式为CH3 (CH2)11oh，用于制作合成洗涤剂和药物。
We put this in the middle of the box. There are CH3 areas and CO2 and we enclosed it for a week.
我们把这个放入盒子中间，这里是CH3的区域，这是CO2的区域，我们封闭它有一周时间。
Any of six toxic isomers, (CH3) 2c 6h 3nh 2, derived from xylene, used chiefly as dye intermediates.
六种有毒的同分异构体中的一种(CH3)2c6H3nh 2，由二甲苯制得，主要用于染料中间物。
The univalent hydrocarbon radical, CH3-, derived from methane and occurring in many important organic compounds.
甲基单价碳氢基，ch3-，由甲烷中衍生出，在许多重要有机化合物中出现。
Since the gas molecules may be decomposed to radicals under strong electricfield, we also considered the adsorption of the CH3 and OH radicals.
由于气体分子在强电场下会分解成自由基，因此也考虑了自由基ch3和OH的吸附。
In this paper, 3,5-Diclorobenzic acid was used as the internal standard to determinate the effective costituces in banvel·NH(CH3)2-MCPA·Na solution by HPLC.
将3，5— 二氯苯甲酸作为内标物，采用液相色谱（HPLC）法同时测定了百甲合剂水剂中的两种有效成份百草敌和二甲四氯钠。
When injected organism tissues were heated, the protein structural symmetry was reduced, oxidated gradually, and the vibration weakened at the end radicel such as -ch3, -ch2.
染尘肌体组织在加热过程中，蛋白质类结构对称性降低并逐渐氧化，末端基团如—ch_3，—CH_2振动减弱。
In resistant lines, the constitutive expression of CH1 and CH2 was more strong and the accumulation of CH2 and CH3 in intercellular Spaces was faster than in susceptible ones.
在抗病品系中，CH1和CH2有较高的本底表达水平，且CH2和CH3在胞间积累的速度也明显快于感病品系。
It is mainly because the polar force in surface tension decreases which results from the increase of CH3 nonpolar group on the surface of silica particles shown from FTIR analysis.
表面润湿性降低，主要是表面张力中极性力的贡献，FTIR分析表明，这是由于二氧化硅颗粒表面-CH3非极性基团增加所致；
On the basis of equilibrated geometrical structure obtained by B3LYP/6-311G method, the nucleophilicity of-N(CH3)2 and-NH2 groups are investigated by electrostatic potential and MO calculations.
在B3LYP/6-311G计算所得的平衡几何构型基础上，分别根据静电势和分子轨道计算研究了分子中-NH2和-N（CH3）2的亲核性，并与偏二甲基肼和卤代烃反应的实验结果进行了对比分析。
On the basis of equilibrated geometrical structure obtained by B3LYP/6-311G method, the nucleophilicity of-N(CH3)2 and-NH2 groups are investigated by electrostatic potential and MO calculations.
在B3LYP/6-311G计算所得的平衡几何构型基础上，分别根据静电势和分子轨道计算研究了分子中-NH2和-N（CH3）2的亲核性，并与偏二甲基肼和卤代烃反应的实验结果进行了对比分析。
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