core wash 中文意思是什麼
core wash
解釋
砂心塗漿-
Through the analysis of contest experimental test questions from 1995 to 2003, it is found that metage, synthesis, standardization and determination are the characteristics of these years " experimental test questions. chemistry experiment is based on the elementary knowledge, especially checking the usage of suction pipet and buret. the core of questions lies on the basic operation of metage, dissolution, suction, refluxing, filter, wash and titration
通過對1996 - 2003年化學競賽決賽實驗題進行分析得出： 「稱量?合成?標定?測定」是近幾年實驗試題的特點；化學實驗重在基礎，特別是考察移液管和滴定管的使用；基本操作如稱量、溶解、移液、回餾、抽濾、洗滌、滴定等是實驗考查的重點。
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