?型砂加入剂
... reversible addition reaction 可逆加成反应 sand additions 型砂加入剂 second addition time 二次加法时间 ...
One of its latest additions, the Sands of Time, is an oral history of the sand industry in Leighton Buzzard.
BBC: Sand memories a first at Bedfordshire archive
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。