查询词典 fountain pen

When, for instance, an ebonite fountain pen is rubbed with a silk handkerchief some of the atoms in the silk have one or two of their electrons knocked off.

举例 来说，当我们用一块丝手帕擦摩一支电木自来水笔时，丝绸中某些原子的一两个电子便会被擦掉，掉落下来的电子聚集在钢笔上使钢笔带上了一些多余的电子，从而产生了多余的负电，或者说一个负电荷。

Part of the appeal of the fountain pen is that it is symbolic – and enduringly so.

钢笔的吸引力有一部分在于它有象征性——而且持久如此。

Is this fountain pen yours -No, it is my sister/'s.

一这支自来水钢笔是你的吗？一不，它是我姐姐的。

He gave me a fountain pen, which I kept to this day.

他给了我一支自来水笔，我一直保存到今天。

He gave me a fountain pen which I kept to this day.

他给了我一只自来水笔，我一直保存到今天。

At first I thought of a fountain pen, but you've already got one.

开始我想到钢笔，不过你已经有一支了。

This kind of fountain pen was used in the last century.

这种圆珠笔在上个世纪使用。

I have never mastered the art of fountain pen use!

我从来没有掌握艺术的钢笔使用！

I gave Tom my watch in exchange for his fountain pen.

我把我的表给汤姆来交换他的钢笔。

Where is the cap of her fountain pen?

她的钢笔套在哪里？

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。