B-Surface is the surface of a component that you can't see in the normal service condition.

级表面是在正常使用状态下看不到的部件表面。

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Tracking and erosion test on insulators and shed material was made under service condition.

结合运行实际，对复合绝缘子及伞套材料的耐漏电起痕和耐电蚀损性进行了试验。

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Stress of al motorcycle wheel under the service condition was analyzed with finite element method (FEM).

用有限元法对服役状态的摩托车铝合金轮毂进行了应力分析。

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The Forest Service is protecting the area from too much human activity so it will return to its natural wild condition.

VOA: special.2009.07.20

It also operated under an enforced government mandate to provide an unprofitable rural air service that only worsened its financial condition.

ECONOMIST: Letters

The condition of the car service's driver is unclear, police said.

WSJ: Expectant parents die in NY crash; baby survives

The study comes after the 2005 report by the Welsh schools inspection service, Estyn, found the condition of secondary schools is 'good' or 'very good' in only a quarter of cases.

BBC: NEWS | UK | Wales | Schools repairs bill 'tops ?785m'