Ultrasonic liquid level measurement is a kind of traditional but having potential’s methods.
超声波测量液位是一种传统的、同时又非常具有发展潜力的方法。
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fluid level
Thermometer or liquid level measuring instrument .
温度计或液面测量仪表。
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If the liquid level goes up, it raises the pressure down here.
当液面升高的时候，这里的压强就增加了。
Then design of a conductive liquid level transmitter is introduced.
介绍一种电导式液位变送器的设计。
In cystic fibrosis, this mechanism is far less effective, because the level of salt concentration in the airway surface liquid is far too high.
BBC: Sugar spray 'prevents lung infections'
Oh, and if anyone wants to dip their iPhone 5 in a vat of liquid nitrogen while trying to push things well over the 2GHz level, we certainly wouldn't try to dissuade your efforts.
ENGADGET: Apple's A6 CPU actually clocked at around 1.3GHz, per new Geekbench report
The Liquid Z2, on the other hand, is an entry-level handset with a dual-core 1GHz CPU and a 3.5-inch HVGA screen.
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