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薄膜表面光滑、无裂纹、致密性好；
The surface of the films is smooth, homogeneous, crack free and dense.
youdao
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检查扬水管有无裂纹，连接是否牢固。
Check whether the water pipes crack Yang, connection is solid.
youdao
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检查扬水管有无裂纹，连接是否牢固。
Check whether the water pipes crack Yang, connection is solid.
youdao