Spring opposed , air operated diaphragm or piston, actuators are preferred for on-off applications.

弹簧平衡型、气动膜片或活塞，执行机构对于开关阀是首选的。

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Analysts note that the rolling rate hike has been pushed out to spring 2014, as opposed to mid-2013.

FORBES: Elusive Economic Growth Weighs on EURO

Doubtless his main theme will be that the Arab Spring is diametrically opposed to Bin Laden's ideology, and leaves al-Qaeda looking flat footed and out dated.

BBC: Arab Spring headaches for Barack Obama