例句與造句

1. Kinds of flotation collectors modified with fatty acid using oleic oil and rosin acid as raw materials were introduced
   摘要介紹了幾種脂肪酸類礦物捕收劑改性產(chǎn)物，它們分別以油酸和松香酸作為出發(fā)原料。
2. It's difficult to find flotation collector in a sentence. 用flotation collector造句挺難的