... cross sectional bed area 床层横截面积 cross sectional inlet area 入口横断面 cross-sectional area coefficient 横剖面积系数 ...
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cross sectional bed area
横截床面积
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The under water pipelines were laid into the stable bed by ditch burying of full cross-sectional area to ensure the safety of underwater pipelines.
水下穿越管线采用全断面沟埋敷设于河床稳定层内，确保了穿越管段的安全。
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