Aimed to the testing problem of brazing quality of arc surface electric contact, its ultrasonic C-scan image model was built firstly.

针对弧形触点的钎焊质量检测问题，首先建立了弧形触点的超声c扫描图像模型。

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For example, all a VFR pilot has to do to enter Class C airspace is establish two-way radio contact with ATC.

例如，VFR 飞行员进入 C 类空域所要做的就是与空中交通管制建立双向无线电联系。

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The principal point of contact at the client (c), who also understands some of the strategic potential, but is similarly denied visibility.

客户那边的主要联系人(C)，也了解一些战略潜能，但类似地被拒绝可见。

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For more information please contact Ms. C.

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