甲烷

Hydro-liquefactions of coal were carried out in a miniautoclave using diphenylmethane and phenetole as model compounds in tetralin solvent.

以二苯甲烷、苯乙醚为煤的模型化合物，以四氢萘为溶剂，进行中高压加氢液化实验，结合产物的气相色谱和质谱分析，考察了SO24-/ZrO2固体酸对煤直接液化的催化作用及加氢液化机理。

It is anticipated that most treatments conducted to meet the regulatory requirements will employ methyl bro mide fumigation , although some other fumigants such as phosphene, or a number of preservative s, may be employed.

尽管可以使用一些其他熏蒸剂如磷化氢或多种防腐剂，但期望大多数为满足这些强制性要求的处理采用溴甲烷熏蒸。

It is anticipated that most treatments conducted to meet the regulatory requirements will employ methyl bro mide fumigation , although some other fumigants such as phosphene, or a number of preservatives, may be employed.

尽管可以使用一些其他熏蒸剂如磷化氢或多种防腐剂，但期望大多数为满足这些强制性要求的处理采用溴甲烷熏蒸。

The photodissociation dynamics of CH2Br2 was investigated near 234 and 267 nm.

利用二维离子速度成像(Ion-Velocity Imaging)方法对二溴甲烷分子在234和267 nm附近的光解动力学行为进行了研究。

Photodissociation of CH_3I at 266nm was used to generate pure CH3radical.

碘甲烷分子(CH_3I)在266nm的光分解被用来产生纯的CH_3 自由基。

In simulations, the layered pillared nano-material is represented by the model with uniform distribution of pillars between two solid walls.

根据常温下甲烷在活性炭中的吸附实验数据，首次用GCMC和统计积分方程结合的方法求解了活性炭的孔径分布。

Adsorption of CCl〓 in slit pores and pillared nano-materials at ambient temperature T=300K was simulated.

模拟了超临界甲烷在不同孔径和不同孔率的层柱材料中吸附。

Adsorption of supercritical methane confined in pillared zirconium chloride was simulated by suing grand canonical Monte Carlo method.

用巨正则MonteCarlo方法模拟了甲烷在氯化锆层柱材料中的吸附。

The Pictet-Spengler reaction of D-tryptophan methyl ester hydrochloride II-42 with piperonal II-34 in various solvents was extensively studied. The best stereoselectivity (cis/trans=99:1) was obtained using nitromethane or acetonitrile as the solvent.

我们研究了在不同溶剂中，D-色氨酸甲酯盐酸盐II-42和胡椒醛II-34发生的Pictet-Spengler反应的立体选择性，发现当分别用硝基甲烷和乙腈做溶剂时反应的立体选择性达到最高， cis：trans的比例为99： 1。

objectiveto predict the promoting effect of chinese medicine on proliferation of rat bone marrow mesenchymal stem cells by bioactivity fingerprint in vitro.methodsthe ointment of plastrum testudinis was extracted by petroleum ether,ether and dichloromethane in burn to gain the extracts.the effects on the proliferation of bmmscs were examined by mtt assay and flow cytometry analysis, and each sample was studied by gc-ms.

目的运用生物活性指纹图谱预测其它中药能否促进骨髓间充质干细胞（bone marrow mesenchymal stem cells，bmmscs）。方法龟版浸膏依次用石油醚、乙醚、二氯甲烷提取，得到溶剂提取物，用mtt 比色法及流式细胞仪器研究了溶剂提取物干细胞活性，采用gc-ms 技术研究每一个提取物，根据总离子流色谱图的相同保留时间和相应峰面积，获得龟版浸膏 gc-ms 生物活性指纹图谱。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。