super fine mountain sand

常见例句

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.
  西部地區河砂匱乏，應用特細山砂和機制砂配制中低強度等級的自密實混凝土是西部地區迫切需要開發的混凝土工程技術。
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