围海中的吹砂管袋围堰结构可行，易于施工，可以在类似工程中推广应用。
The blown sand bags cofferdam structure in coastal reclaim is doable, and easily to carry out, so it can be applied on similar construction.
结果表明：零件渗碳前经吹砂或磷化，渗碳时通入NH3，能够保证渗碳层均匀。
The results show that the carburized case uniformity can be ensured through sand blasting or phosphating before carburizing, and NH3 is filled during carburizing.
吹填砂虽然强度较高，但地震时存在液化的问题。
Although the dredged sand has a higher strength, the earthquake liquefaction of sand should be considered.
吹填砂虽然强度较高，但地震时存在液化的问题。
Although the dredged sand has a higher strength, the earthquake liquefaction of sand should be considered.
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