The article introduces the general character of soft soil roadbed and the treatment scheme of sand cushion and plastic drain board.

介绍了软土路基的共性，砂垫层、塑料排水板处理方案。

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The utility model is a water grating board which is convenient to drain. The utility belongs to water grating used in municipal works and sewers of streets and dwelling communities.

一种方便排水的水箅盖，属于市政工程、道路、生活小区内等下水管道上 使用的水箅盖。

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One big reason chiefs are fleeing boards is that serving on a public board is a huge drain on time.

FORBES: Magazine Article

John Quackenbush, previously a member of TIGR's faculty and a professor at the Dana-Farber Cancer Institute, says that the "vanity genome, " which he saw as a drain on resources, was one of the things he protested when the TIGR faculty went to the institute's board to try and preserve Fraser's job.

FORBES: All Mapped Out