It does this by fitting small piezoelectric acoustic sensors to parts of the structure to detect the particular frequency of noise caused by a crack in aircraft-grade aluminium.

把小型压电声传感器安装到这种构造部位上，检测由航空级铝材裂纹所致的特定频率的噪音，靠这样就能监测飞机裂纹。

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Engineering works mentioned herein refer to construction projects including the construction, reconstruction, extension, fitting, removal, repair of buildings and component parts.

本法所称工程，是指建设工程，包括建筑物和构筑物的新建、改建、扩建、装修、拆除、修缮等。

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They produced each product piece by piece, making each part individually and fitting the parts into the finished product.

他们进入完成的产品之内生产了块、个别地每个部份地制造和配件部份的每种产品块。

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Mr. Shore's overture comprises seven themes, all of which reappear and interlock in various forms like parts of a fine timepiece, a fitting concept since 12-year-old Hugo tends to the clocks of a Paris train station.

WSJ: Who Will Win the Oscar for Best Score? | By Jim Fusilli