查询词典 secondary

The fourth milestone was in the embryonic stage of development . Vertebrates and echinoderms began to develop differentiated mouth structures from secondary openings off the blastopore ( an initial opening in the embryonic cavity ).

第四个重要事件出现动物的胚胎发育期，脊椎动物和棘皮动物开始在胚孔（即动物早期胚胎原肠的开口）相对的一端另行开口，并最终发育为成体的口。

The converter can be improved just by exchanging the position of the resonant inductance and the transformer such that the transformer is connected with the lagging leg. The improved converter has several advantages over its counterpart, e.g., the clamping diodes conduct only once in a switching period, and the resonant inductance current is smaller in zero state, leading to a higher efficiency and reduced duty cycle loss. The operation principle of the improved converter and the comparison with the original converter are analyzed in this paper. The effect of the blocking capacitor in series with the transformer or resonant inductance is discussed, and a best scheme is determined.The improved converter is adopted to design the DC/DC converter of secondary power supply in HVDC power system.

本文将谐振电感和变压器交换位置，使变压器与滞后桥臂相连，这样箝位二极管在一个开关周期中只导通一次，同时零状态时谐振电感电流较小，有利于提高变换效率和减小占空比丢失，本文分析改进后变换器的工作原理，并与改进前的变换器进行对比，讨论隔直电容在不同位置对变换器工作的影响，确定一种最佳工程方案。

Mechanism analysis shows that structural defects are the root cause of uns table blowdown performance of secondary filter screen.

机理分析表明，结构上的不足是导致二次滤网排污性能不稳定的根本原因。

The mainest environment problem has the whole world air temperature to change now warm, air pollution , water resource contaminate wait, specifically for all above problem, blowoff I think that the primo ought to control the automobile tail gas, the tail gas sends warm air pollution to make and the air temperature is changed into more than the correct or required number to have interwovenness relation , secondary, the industrial sewage and domestic sewage overanxious and purifying, cut down contaminating to water resource.

现在最主要的环境问题有全球气温变暖，大气污染，水资源污染等，针对以上问题，我觉得首先应当控制汽车尾气的排放，过多的尾气派发与气温变暖和大气污染有着密不可分的关系，其次，过虑和净化工业废水和生活污水，减少对水资源的污染。

Simply, the hydrate is a compound containing water molecules and secondary school textbooks mentioned on the alum, gypsum, and blue vitriol, are the most famous hydrate.

简单地来说，水合物是含有水分子的化合物，中学课本上提到的明矾、石膏和蓝矾等，都是最著名的水合物。

Following the accident can not, money is secondary, the body is the capital of the revolution!

不出意外1000以下，钱是次要的，身体是革命的本钱！

Bohemianism Though a Bohemian is a native of the Czech province of Bohemia, a secondary meaning for bohemian emerged in 19th century France.

虽然波希米亚人是指捷克波希米亚省的当地人，波希米亚人的第二个涵义却是出现在19世纪的法国。

He has taken out one damned story book thereupon on secondary bookrack.

于是他从书架上取出了一本鬼故事书。

"Induced development effect; boomtown effect: The secondary growth of settlements and infrastructure, resulting from a project."

引发发展效应；繁荣城镇效应：由一个项目带来的居民区和基础设施的间接增长。

"Induced development effect; boomtown effect: The secondary growth of settlement s and infrastructure, resulting from a project."

引发发展效应；繁荣城镇效应：由一个项目带来的居民区和基础设施的间接增长。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。