“standard sand”的概念、定义、翻译、参考文献-科学参考

单词	standard sand
释义	standard sand [`stan·dǝrd `sand] ^MATERIALS A silica sand that is free of organic matter and is used in making test samples of concrete and cement.
随便看	ion source ion spot iontophoresis ion trap iophobia Iospilidae Io torus Iowan glaciation ioxynil ioxynil octanoate IPC ipecac Ipidae IPL IPL button ipsilateral ipsonite IQ IQSY Ir IRBM irdome IR drop IRG IR gene

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