The fault phase selector discussed is based on the result that the fault component of sound phases is zero when a single-phase-to-ground fault occurs.

文中所探讨的相电流突变量选相元件，是利用单相接地故障时，两健全相相间电流突变量为零这一特征来得到的。

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Alarm function: sound alarm and stop machine. Alarm content: lacking phase, under-voltage, overvoltage, high temperature and urgent stopping.

报警功能：声响报警并停机；报警内容：缺相，欠压，过压，高温，紧急停机。

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The "Sound Steward" service ZISEN pioneered covers every phase from project approval, investigation, design, construction, completion and acceptance.

声学独创的“声管家”服务，从项目立项科研阶段-项目设计阶段-项目施工阶段-竣工验收阶段。

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Our mastering quality sound (MQS) is considered as the last phase of sound produced in mastering studios and uses ultra-high resolution sound quality (24 bit, 192 kHz).

ENGADGET: iRiver's AK100 lossless-friendly music player heading to the States December 4th

As for audio, the app includes a pair of sound tests to make sure speakers are in phase and pump out the right output.

ENGADGET

"Together, we proved that a human in freefall can break the speed of sound returning from near space, going through a transonic phase and landing safely on the ground, " said Dr Jonathan Clark, a former space shuttle flight surgeon and the Red Bull Stratos medical director.

BBC: Skydiver Felix Baumgartner fell faster than first thought