甲烷

Tyramine was synthesiaed from p-thydroxybenzaldehyde through condensation with nitromethane and then reduction with tin powder and hydrochloric acid.

以对羟基苯甲醛和硝基甲烷为原料，经缩合和锌粉、盐酸还原合成酪胺，两步反应总收率61％。

Using unacclimated sludge as seed, a bench-scale EGSB reactor was run. After a twostage startup, both dechlorination rate and SMA increased, organic loading rate and PCP loading rate reached 5. 4kg COD/ and 94. 7mg PCP/ respectively.

以未驯化污泥为种子，经过EGSB反应器两阶段的启动，厌氧颗粒污泥的比产甲烷活性和脱氯活性都得到极大提高，有机容积负荷和PCP容积负荷分别达到5.4kg COD／和94.7mg/。

Moreover, evaluating the effects of different factors such as laying up unaffectedly, temperature.

此外，又评价了自然放置不同时间和不同温度对自来水中氯仿、三氯乙烯、二溴一氯甲烷等存在的影响。

Based on a mathematical model assuming that dissociation of hydrate in the porous media takes place in constant temperature boundary condition, the analytical temperature distributions in dissociated and undissociated zones were solved, and thermal efficiency and energy efficiency were derived.

将多孔介质中天然气水合物在热力作用下的分解过程看作一个移动边界问题，在求解等温边界条件下水合物地层中分解区和未分解区温度场的基础上，推导出热力法开采水合物过程中开采热效率（用于水合物分解的热量与输入热量之比）和能量效率（开采所得甲烷气体的总热值与输入能量之比）的解析表达式。

Such fibers in unfermented beans end up being digested by bacteria in the human gut, which then release methane.

这些没有发酵过的豆类中的纤维因为细菌而在人体内被完全消化，释放出甲烷。

The remaining chapters of this thesis can be divided into two parts: thefirst part includes chapter 2 and 3, where studies about non-adiabaticphotodissociation of 〓 are discussed. Also presented is our theoreticalinvestigation on control of this process with pulsed laser fields; The secondpart of this thesis consists in chapter 4 and 5, where our application of quantumsymplectic methods to the full-dimensional unimolecular dissociation offormyl radical, HCO, is presented, results of ab initio calculation of the dipolemoment surface of HCO are also given.

论文余下的章节可以分成两个部分：第一部分包括第二和第三章，主要讨论对碘甲烷非绝热光解过程的研究，以及利用脉冲激光对这一过程进行控制的理论探讨；第二部分包括第四和第五章，借助量子辛算法研究了HCO三维解离过程中的一些动力学行为，并用从头算方法计算了HCO的偶极矩面。

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

For the acidified wastewater, calcium precipitation occurred mainly on the granular sludge surface; for the unacidified wastewater, accumulation occurred in the core of granular sludge, and for the unliquefied wastewater, precipitation evenly distributed within the granular sludge and on the surface.

已经酸化的废水，乙酸转化为甲烷的场所主要在颗粒污泥的外表面；对于未酸化废水，这种转化发生在颗粒污泥的核心；难酸化的废水，污泥内部存在着底物酸化的过程。

Uranian atmosphere, by composition, is 83% hydrogen, 15% helium and 2% methane although traces of other hydrocarbons have been found.

天王星大气的组成，是83％的氢，15％的氦和2％的甲烷等碳氢化合物虽然已发现的痕迹。

During the process of this research, the Otto configuration and KR configuration are used to proceed the special analysis on the chlorine and Halogen-methane, and through the simulative experimental investigation into the tiny variation of dielectric constants of Halogen gas, the resonant angle and depth of absorption of the to-be-investigated gas can be accurately measured. Thus, this optical measuring system can be confirmed with high sensitivity.

研究过程中，我们使用Otto组态与KR组态分别对氯气与卤族甲烷做特别的分析研究，经由卤族气体的微小介电常数差异，透过模拟实验分析后，仍然可以准确的判断出待测气体之共振角度与吸收的深度，所以利用此光学式量测系统来量测可说是具有相当之灵敏性。

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。