查询词典 double-headed

Heat treatment tests of normalizing,quenching and temperature tempering,double quenching are carried on the material ZG25Mn for the axle box base of electric locomotive.

对机车抱轴承箱材料ZG2 5Mn进行了正火、调质、二次淬火的热处理工艺试验，比较分析了不同工艺的金相组织和机械性能，阐述了二次淬火的强韧化机理，认为二次淬火可以改善组织，提高强度与韧性。

For the convenience of study,the optimized design method is discussed and the azimuthal displacement design is made by taking the double-build section most in use for example in this paper.

为讨论方便，文中以常用的双增型剖面为例，讨论其最优化的设计方法，并进行了方位漂移设计。

Starting from 3-benzoyl-5-formyl-indolizine, 3-benzoyl-5-(2'2'-diacetylethenyl)-indolizines and analogs were obtained by the 〓mediated aldol condensation or Wittig reaction. These compounds,promoted by low-valent titanium, gave highly functionlizedcycl[3,2,2]azine derivatives. The coupling reaction proceeded betweenthe carbonyl group and the carbon-carbon double bond, a rare example inMcMurry reaction.

我们以3-苯甲酰基-5-甲酰基中氮茚为原料，通过三碘化钐促进的aldol反应和Wittig反应制备了3-羰基-5-羰基乙烯基中氮茚，随后经低价钛还原偶联，没有生成正常的分子内羰基-羰基偶联产物，而是得到反常的羰基与α，β-不饱羰基的双键偶联产物，较高收率地得到了含多官能团的CycI[3，2，2]azine衍生物。

Azole:a class of organic compounds having a five-membered heterocyclic ring with two double bonds.

氮杂茂：一种由五种杂环元素，两组粘合剂组成的有机化合物。

With a double baby jogging stroller you can simply take the kids with you.

与双重婴儿推车慢跑，您可以简单地采取孩子与您联系。

Many people who have twins decide to purchase this type of double baby jogging stroller.

很多人有双胞胎，谁决定购买这种类型的双慢跑婴儿推车。

A double baby jogging stroller with a pouch in the back is a great choice.

双婴儿推车慢跑与邮袋在后面的是一种伟大的选择。

If yours is one of those lucky families whose numbers have increased by two instead of just one: a double baby stroller will be perfect for you.

如果您是其中一人幸运的家庭，他们的人数增加了两个，而非只是一：双重婴儿推车，将完美的你。

If this is a consideration for you, a double baby jogging stroller with a basket underneath that can accommodate these things will work well.

如果这是一个考虑你，双重婴儿推车慢跑与一篮子底下，可以容纳这些东西会工作。

Jane and Judy ran back to their bench two-double with laughter.

珍和朱蒂跑回他们的长椅，笑得直不起腰来。

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％。