这种泥土是一种蓝青色胶质土,主要由蒙脱土和一些伊利土组成.The mud was a blue - gray plastic clay composed predominantly of montmorillonite with some illite.通过在聚丙烯中添加纳米蒙脱土的改性方法,开发了高模量聚丙烯专用料.High - modulus polypropylene compound was developed by means...
Plumbers caulk joints in pipe with lead, string or a caulking compound.管子工用铅 、 绳子或专用填隙材料使管子的接头不漏水.Shipbuilders caulk wooden boats with oakum and tar.造船工匠用麻丝和沥青填塞木船缝隙,使之不渗水.Fibermax caulk is also used as a patchingmateria...
This is the virus in very crude simple diagrammatic form.这是非常粗略简单的图式病毒形态。Gasoline is distilled from crude oil.汽油是从原油中提炼出来的.OPEC has agreed to freeze its global oil production slightly in order to firm up crude prices.石油输...