封的例句大全

The seal has worn and the machine is losing oil.

密封处已经磨损,机器漏油了.

I received a sugar report this morning.

今早我收到了一封情书.

I got a sugar report this morning.

今早我收到一封情书.

I received today a letter dated January 1 st.

今天我收到了一封元月一日发出的信.

On the one hand they prospered the feudal economy, on the other hand they undoubtedly had the disintegrative function to the Chinese traditional society.

他们一方面繁荣了封建经济，另一方面又无疑对中国传统社会发生着瓦解的作用。

Methods: 346 molars from 45 adolescents ( with pit-fissure of No. 6 or 7 accessional teeth in the supermaxilla and submaxilla being rather deep and caries being superficial) were treated by means of fissure blockage.

方法：在60例青少年中选择346颗磨牙（上下颌第6、7恒磨牙的窝沟过深，浅龋）进行窝沟封闭。

While I knew I shouldn't let it, the mailman's morning delivery of another rejection letter for an article I'd submitted to a magazine made me feel like a black cloud of failure hung over my head.

虽然我知道自己不该这样，但是早班邮差送来的又一封我给杂志投稿的退稿信就象是一片失败的乌云挂在我的头顶上。

Experimental Study of Mechanical Seal Face Stability in Changing Conditions

变工况条件下机械密封端面稳定性实验研究

ZAIN VERJEE, CNN CORRESPONDENT: King Henry wrote that letter on this desk belonging to Catherine of Aragon, who he was scandalously still married to.

CNN特派员洁茵·维尔吉：英王亨利在这张桌子上写了这封信，而这张桌子属于阿拉贡的凯瑟琳所有，当时他们饱受毁谤的难堪婚姻还没结束。

The improvement of Multiple centrifugal pump sealing protection ring for ammonia production was introduced.

介绍了合成氨生产中多级离心式打水泵密封保护环的改造.

To build modern spiritual civilization and clean up the filth and mire of feudal ideology; to build new civil convention and to improve the cultural quality of the Chinese nation.

努力进行近代精神文明建设和荡涤封建思想意识污秽，开创社会文明新风尚与提高中华民族的文明素质。

Thirdly, its new form and contents are not only of the style of strong anti-feudalism against the traditional inertia, but also of the significance of opening up the new fashion of scholarly research.

它从形式到内容整体手段的全方位更新，不仅具有冲击传统惯性的强劲的反封建之风，又有开拓学术研究新风尚之意义。

He had one of his most essential letters to write.

他还有一封十分紧急的信要写.

You'd better express the letter; it's urgent.

你还是以快邮寄那封信好; 那是很紧急的.

The tube is sealed at both ends.

这管子两端是密封的.

The system is completely sealed and the only moving part is the metal itself.

整个系统是完全密封的,只有金属本身在其中流动.

The computer disk is sent in a sealed container.

计算机软盘装在密封的盒里寄出.

But at the same time lead to seal damage.

但这同时也导致密封的破坏.

Selection of seal will affect the usage life seal in great degree.

密封的选用在很大程度上直接影响其使用寿命.

This also increases reliability by simplification of the sealing arrangements.

这样,简化了密封结构,也就提高了可靠性.