甲烷

Garlic oil ; Deodorized garlic oil ; Cultivation in vitro ; Methanogenesis ; Microbiota

大蒜油；脱臭大蒜油；体外培养；甲烷生成；瘤胃微生物

Methylimidazole in soy sauce was extracted with methylene chloride,diazotized to forms a red colored azo-compound with the highly absorbance at the wave length of 440nm and determined by ultraviolet-visible spectrometry.

酱油样品在层析柱中用二氯甲烷洗脱，经重氮化后在波长440nm处具有最大吸收，据此建立了紫外可见光谱法测定酱油中4-甲基咪唑的方法。

Acetylated starches with high degree of substitution were synthesized from cornstarch with acetic anhydride as esterifying agent and methanesulphonic acid as catalyst.

以玉米淀粉为原料，醋酸酐为酯化剂，甲烷磺酸为催化剂，制备高取代度淀粉醋酸酯。

Exhaling carbon dioxide is one of these processes in which humans are involved, as well as the release of methane.

exhaling二氧化碳是其中的进程中，人类所涉及的，以及作为释放甲烷。

The average cow expels 600 liters of methane a day.

一般每头牛每天会排出600升甲烷。

According to the Box-Benhnken design principle,the method of response surface method with 3 factors and 3 levels was used. The factors influencing the technological parameters were determined by means of regression analysis. Response surfaces were finally graphed with the yield as the response value. The synthesis conditions were optimized as follows:reaction reagent was NBS,stoichiometric proportion between NBS and anhydrovinblastine was 1.07; the dosage of TFA was 22 mL/L; reaction temperature was －68 ℃ and duration was 90 min.

在单因素实验基础上，根据Box-Benhnken实验设计原理，采用三因素三水平的响应面分析法，研究了各个因素及其交互作用后，得到了合成7′-Br-脱水长春碱的最佳工艺条件：以二氯甲烷为溶剂，采用NBS为溴代剂，其用量与底物的物质的量比为1.07∶1，TFA的加入量22 mL/L，在－68 ℃下反应90 min，终止反应后，得到卤代产物。

In theory, people can use the same oil and gas exploration drilling technology, the development of methane gas hydrates.

理论上讲，人们可以利用与石油和天然气开采相同的钻探技术进行可燃冰中甲烷的开发。

Purpose: KJZ2-1550/1140Z mineral explosion-proof and hypostases safety power supply intelligence vacuum combination switch is applied to applied to the terrible conditions such as gas, grime for mining.

用途： KJZ2-1550/1140Z矿用隔爆兼本质安全型智能真空组合开关适用于含有甲烷混合气体、具有煤尘爆炸危险的煤矿井下。

Purpose: KJZ-1500/1140Z mineral explosion-proof and hypostases safety power supply intelligence vacuum combination switch is used in the mine, which contains firedamp mix gas and has the danger of blast of grime.

用途： KJZ-1500/1140Z矿用隔爆兼本质安全型智能真空组合开关适用于含有甲烷混合气体、具有煤尘爆炸危险的煤矿井下。

KJZ2-1550/1140Z mineral product explosion-proof and hypostases safety power supply intelligence vacuum combination switch is used in the mine which contains firedamp mix gas and has the danger of blast of grime.

KJZ3-1550/1140Z矿用隔爆兼本质安全型智能真空组合开关适用于含有甲烷混合气体、具有煤尘爆炸危险的煤矿井下。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。