例句與造句

1. the mortar osmotic pressure ratio is highly 500 % and its water reducing ratio is only 9 % . concrete mixing with polycarboxylic acid type waterproofing agent holds excellent
   試驗(yàn)結(jié)果表明,多元羧酸系防水劑具有高的抗?jié)B性,砂漿滲透壓力比高達(dá)500%,其減水率為9%。
2. It's difficult to find osmotic pressure ratio in a sentence. 用osmotic pressure ratio造句挺難的