查询词典 collecting stamps

In succession, by using of the simulative program under various running conditions, we studies the different effects that various parameters on the dynamic current-collecting such as running speed, span length, ocs tension force, masses of pantograph head and framework, damping capacity and stiffness etc. Moreover, measures are suggested to improve the quality of current-collecting, especially the idea of active control scheme, which restains the fluctuation of contact force by modulating the air pressure of pantographs airbag.

利用弓网仿真程序对各种工况的弓网受流进行模拟仿真，分别研究了列车运行速度、接触网跨距、接触线张力以及受电弓弓头和框架质量、阻尼、刚度等对弓网系统受流的影响，提出通过主动控制技术对弓网系统的振动进行抑制的气囊调节方法，将受电弓气囊的气压值作为控制对象，通过对气囊气压的调节来抑制弓网接触压力的波动。

Up to now, he has collected a great number of stamps.

到目前为止，他已经收集了大量的邮票。

Can I also have a sheet of 20 sixty-four -cent stamps?

我可以顺便买一组二十张的六十四分钱的邮票吗？

I recently bought a sheet of postage stamps that shows a beautiful scene of the Sonoran Desert.

我最近买了一套邮票，票面风景是墨西哥的索诺兰沙漠。

The gift folder contains a sheet of four stamps of which three have already been issued.

礼物的文件夹包含四个，其中三个已发行邮票表。

It's the only known specimen to have survived a printing error that turned a sheet of blue-green stamps yellow.

一次印刷错误让蓝绿色的邮票变成黄色，而这是唯一一张留存下来的邮票。

When the clerk handed him a sheet of the stamps, Robey noted that they were poorly centered.

当职员递给他一版新邮票时，罗比看到它们的中心位置很差。

When the clerk handed him a sheet of the stamps, Robey noted that they poorly centered.

当职员递给他一版邮票时，罗比看到它们的中心位置很差。

When the clerk handed him a sheet of the stamps, Robey noted that they were poorly centerde.

当职员递给他一版新邮票时，罗比看到它们的中心位置很差。

GIFT WRAPPING CENTER : Children will be given a sheet of paper and Christmas stamps to create their own wrapping paper.

学生们将利用一张纸和圣诞节的小印章来设计自己的包装纸。

Those who loved reading were obliged to send for their books from England; the members of the junto had each a few

那些喜欢看书的人就得从英国购书，讲读俱乐部的的成员每人都有几本。

Three fourths of the earth's surface is covered with water.

地球表面的四分之三被水覆盖着。