Precast concrete blocks are made by pouring unset concrete into a mold allowing it to harden.

The paper discussed the procedure and attentions of box beam precast for reference.

阐述了箱梁在预制过程中的每一个环节和每一个步骤以及施工中应注意的事项,从而保证了箱梁预制的质量.

In harbour construction, precasting caissons with slip form construction technology is a new attempt.

港口施工中, 利用滑模工艺预制沉箱是一种新的尝试.

You need to take every possible precaution to minimize its risks.

你必须做出每种可能的防范的方法将其风险降到最低.

I had taken the precaution of doing a little research before I left London...

我已在离开伦敦前进行了准备，做了些调查研究。

Reflect the idea that precaution is given priority to and improves continuously adequately.

充分体现预防为主和持续改进的思想.

I'll keep the letter as a precaution .

我要保存这封信，以防万一。

This precaution taken, they went to the theatre, and installed themselves in the count's box.

经过这一番小心打扮之后, 他们就到了戏院里, 坐在了伯爵的包厢里.

Fire precautions were neglected.

防火措施被忽视了。

He was kept in the hospital overnight as a precautionary measure .

为了谨慎起见，他被安排整晚留院观察。

safety precautions

安全防范措施

He was using every precaution to hide her whereabouts.

他采取了一切预防措施把那个女孩的行踪隐藏起来.

In some cases, precaution is of the biggest necessity.

在一些情况下, 谨慎是最必需的.

We didn't take any precautions and I got pregnant.

我们没有采取任何避孕措施，所以我怀孕了。

This is just a precaution.

这只是一项预防措施.

As a safety precaution, please walk facing the traffic.

为了安全, 请走路要面对〔注意〕车辆.

Security was strengthened at the embassy as a precaution against any terrorist attack.

该使馆同时加强警卫,以防范遭恐怖袭击.

So testing would be just a precaution and not because there's a likelihood of any problems.

检测可以是一种预防,并不是因为要有出现什么问题的可能.

The primary mission of the bombers was set to naval attack as a precaution.

主要任务是派出轰炸机防范来自水面的打击.

This the method and precaution the operation, it also discusses the causes.

文中详细叙述了手术方法及注意事项, 并对病因作了分析和探讨.

Could he not, just as a precaution, move to a place of safety?...

就算仅仅是为了以防万一，难道他就不能挪到安全的地方吗？