Testing for a passive surface is usually accomplished by looking for traces of free iron on the metal surface.

钝化表面的检测通常是通过查看金属表面的游离铁的踪迹来完成的。

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Establishing a passive surface or film on austenitic SS is essential to maximize the corrosion resistance that the metals offer.

在铬镍不锈钢表面形成一个钝化的表面或膜是非常重要的，它可以将材料的抗腐蚀性提高到最大。

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A virtual instrumentation system for wireless sensing using passive surface acoustic wave sensors is presented. It is designed in light of software on common hardware platform.

分析了在通用硬件平台上结合软件设计的声表面波谐振器无源无线传感虚拟仪器系统。

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Mine is a profession that might on the surface appear to suit the passive personality.

NPR: Excerpt: 'Trauma'