Open Ch. 1 and then close Ch. 2. Verify that Ch. 2 is within specification.

开路通道1，然后闭合通道2。验证通道2在规定的技术指标范围之内。

youdao

Not only did the acquisition of these lands enable Ch 'in to secure its flank, but their loss by Ch 'u seriously weakened the power of that state, heretofore perhaps Ch 'in's major rival.

得到这些领土，不但使秦能确保其侧翼的安全，而且由于楚国丧失巴蜀，这个国家的国力，大大削弱，迄今为止，它也许是秦的主要敌人。

youdao

A good example of that is CH4, because the CH bond is polar but symmetrically disposed in space.

甲烷就是一个很好的例子，因为极性键是,空间对称的。

麻省理工公开课 - 固态化学导论课程节选

Peruse texts on Chinese ink painting and you will inevitably come across Dong Qichang (1555-1636), or Tung Ch'i-ch'ang as some transliterate his name.

WSJ: Paths Easy and Daunting | Ming Masterpieces | Artful Recluse | Lacma | Asia Society | By Lee Lawrence

The deployment of a replacement for the CH-46 will be postponed conservatively for five years probably necessitating an expensive service-life extension program for the CH-46s.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Right Way To Respond To The ��Too-Many-Air-Forces�� Criticism: Keep The V-22 Osprey Multi-Service And Multi-Mission

First there were plans to expand the old ch??teau by enveloping it in stone.

FORBES: Palace Coup