The suggestion is proposed for specification on the terms of aqua ammonia and ammonium hydroxide.

文章对如何规范“氨水”和“氢氧化铵”的表述提出了建议.

Two methods for the determination of magnesium in rare earth-magnesium middle alloy by EDTA titrimetry , i. e. oxalic acid precipitation and ammonium hydroxide precipitation, were studied.

研究了分别采用草酸和氢氧化铵沉淀分离稀土镁中间合金中的稀土，EDTA络合滴定法快速测定电解稀土镁中间合金中镁的两种方法。

Then the new cage-like vinyl silsesquioxanes(VS) were synthesized by the reaction of vinyl-tetra-coordinate silicon with tetraethyl orthosilicate in the condition of tetramethyl ammonium hydroxide.

然后在四甲基氢氧化铵催化下与正硅酸乙酯反应，制得笼状乙烯基倍半硅氧烷；

The samples were prepared by extraction using methanol followed by partitioning between ammonium hydroxide and chloroform.

样品经甲醇提取后，再用氨水-氯仿萃取。