Gate valves are normally used for on-off service and are not recommended for throttling service.

闸阀通常应用于开启-关闭场合，不能用于节流应用。

youdao

They're used primarily for on-off service and provide excellent wear life and 100% positive shutoff of abrasive slurries.

他们主要用于开关功能，同时提供卓越的磨损寿命，对浆液实现100%的完全关断。

youdao

Many would say the Internet is a place for people who have given up on the traditional postal service, but Paulo's hunch paid off.

许多人会说，互联网是为那些已经放弃传统邮政服务的人提供的，但保罗的直觉得到了回报。

youdao

Such a decision would put hundreds of British jobs at risk and would once again deprive Londoners of the much-loved hop-on, hop-off service.

CNN: London mayoral election: Battle of the buses

In hybrid form, a private cloud can include data stored on premise or off, with a private Platform-as-a-Service middleware layer managing application data and enforcing data security.

FORBES: The Data Protection And Security Case For Private Clouds

Vice President Al Gore helped kick-off "Public Service Recognition Week" at an awards ceremony on Capitol Hill this morning.

CNN: AllPolitics - Gore Honors Government Workers