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- An indirect esterified spectrophotometric method, based on the reactive system of ethyl acetate, oxammonium hydrochloride and iron chloride, is developed for the determination of aceryl chloride. 以乙酸乙酯、盐酸羟胺和氯化铁的反应体系为基础,用酯化分光光度法间接测定了乙酰氯。
- Theoretical studies on synthetic process of lactide were carried out with density functional theory and the geometries of compounds maybe to appear in reactive system were optimized. 摘要采用密度泛函方法研究了丙交酯的合成过程，优化了合成过程中可能出现的化合物的几何构型，分析了各化合物的振动频率和偶极矩。
- Methods APC:T:B cell reactive system was established in vitro. T cell proliferation was analyzed by using 3H TdR incorporation in the blockade of B7/CD28 with B7 1mAb and CsA. B cell antibody production was assayed by using ELISA. 方法 在体外建立抗原递呈细胞 T淋巴细胞 B淋巴细胞反应系统 ,利用环孢素A(CsA)与抗B7 1单克隆抗体联用阻断B7:CD2 8共刺激途径 ,采用3H TdR法检测T淋巴细胞增殖 ,酶联免疫吸附试验 (ELISA法 )测定B淋巴细胞分泌的抗体。
- I suppose you also have a caste system in your society. 我想你们的社会里也有一种等级制度。
- The right to dissent is part of our political system. 有持异议的权利是我们政治体制的组成部分。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- Public opinion was against the old feudal system. 公众舆论反对旧的封建制度。
- The system works on the principle that heat rises. 该项装置是按照热力上升的原理运转的。
- The drainage system has been aged. 排水系统已经老化了。
- They called for a radical reform of our tax system. 他们要求对税收制度进行根本改革。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- He's mute on the subject of social system. 他对社会制度的问题保持沉默。
- He said he used this system in the year dot. 他说他很久以前用过这个系统。
- Our manager is conversant with account system. 我们的经理精通会计制度。
- The system can translate English into Chinese. 这个系统能将英语译为汉语。
- The caste system is still strong in India. 种姓制度在印度仍然很牢固。
- I can send him a note via the internal mail system. 我可以通过内部通信系统给他发个通知。
- A request for information from another system. 为查看另一系统中的信息而发出的一种请求。
- Most countries adopt metric system. 大多数国家采用米制。
- Many reforms must be made to the education system. 教育体制要作许多改革。
