查询词典 mains

In most cases it is derived from the AC mains by means of a transformer and rectifier.

大多数情况下直流电是从交流电通过变压器和整流器而来的。

But maybe some of the old city re－mains.

但是也许有一些旧上海的东西遗留下来吧。

In that time, there were two mains themes in Chinese literary writings.

那时新马华文文学作品有两个主要的主题。

New water mains switch effect, they are practical, at the end of you!

一款水管开关效果，挺实用的，大家来看看吧！

I turned the gas off at the mains before I went out.

我出门之前，把煤气的总阀关掉了。

My new house is not yet connected to the mains.

我的新房子还没接上水、电、煤气呢。

The switch is placed in its traditional location here, next to the mains connector.

开关放置在其传统的位置在这里，旁边的水管接头。

What is a mains first duty?

一个人的首要职责是什么？

This paper studied how to design, adjust and optimize the water-using networks with internal water mains.

通过实例以及与常规调整方法的对比，证明了本文提出的方法的可行性和优越性。

But it also has three mains issues, mobility, communication and security, should be conquered.

但该技术也有移动性、通讯与安全性三个主要的议题需要被克服。

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％。