化合

Many risk,hazard and environmental factors are existing in the acylation process of N-formylmorpholine from morpholine.

吗啉酰化合成甲酰吗啉过程存在诸多安全与环保的危险、有害因素。

The synthesis of glyoxylic acid by ozonization of maleate was studied, the influence of technological parameter on the reaction during ozonization process were investigated.

对马来酸酯臭氧化合成乙醛酸的技术进行了研究，重点考察了臭氧化过程中的工艺参数对反应的影响。

The experimental results showed that H-MCM-22 possessed a high activity on alkylation of toluene with methanol, but low paraxylene and xylene selectivity.

采用NH3-TPD、IR等表征了改性前后催化剂的酸性，考察了改性MCM-22分子筛上甲苯与甲醇烷基化合成对二甲苯的反应性能。

We promise to use hydrocarbon dry cleaning solvent, which is harmless to human being, no perchlorethylene dry cleaning solvent would be used.

本中心承诺采用对人体健康无伤害的碳氢化合类干洗溶剂，绝不使用对人体有毒害的四氯乙烯干洗溶剂

Phenothiazine compounds should not be used in patients receiving large doses of hypnotics, and should be used, with caution in patients with a history of convulssive disorders, since grand mal convulsions have been known to occur.

接受大剂量安眠药的患者不应使用吩噻嗪化合对有惊厥病史的患者应慎用，物，对有惊厥病史的患者应慎用，因为已知有发生过癫痫大发作。生过癫痫大发作。

The quality of cis-pinane synthesized from α-pinene by catalytic hydrogenation effects its post-products' yields and qualities.

以蒎烯为原料合成各种萜烯香料受到国内外香料界的普通重视，α-蒎烯催化氢化合成的顺式蒎烷的品位直接影响到后续产品的收率和质量。

The conversion of acetic acid and the selectivity of propylene reached 85.43% and 98.52%, respectively.

本文还对乙酸与丙烯直接酯化合成乙酸异丙酯的动力学进行了研究。

It carries out these functions in its active form, as a component of the coenzyme thiamin pyrophosphate.

维生素B1以化合的形式在醣代谢中具重要作用，如辅焦磷酸硫胺素。

Process the Quicklime Mixture and the Acidic Mixture with the Amalgamating Machine in Factory Bay B.

将石灰化合物和酸性化合投入到工厂B区的搅拌机中，随后你就将得到可燃的化合物。

Recent research progresses of method of preparation in chiral compound's racemate of amino acids were reviewed in this paper, the possible development future of it was predicted.

综述了近年来含氨基酸的手性化合物外消旋体的制取方法，并展望了其研究发展的前景。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。