super fine mountain sand

常見例句

雙語例句

• The sand is lack in the western China, so preparing self-compacting concrete with low and middle strength with Super Fine Mountain Sand and Artifical Sand is necessary.
  西部地區(qū)河砂匱乏，應(yīng)用特細(xì)山砂和機(jī)制砂配制中低強(qiáng)度等級的自密實(shí)混凝土是西部地區(qū)迫切需要開發(fā)的混凝土工程技術(shù)。
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