This paper discussesd the preparation of glage-trace element fertiliar.Main raw material-glass and some trace element were put into together,when the reactants were melt,they occur solidoid reaction.
玻璃微量
肥料,是以玻璃为主要原料,加人适量的微量
,
过灼
成为

态后,发生固相反应,即生成玻璃微量
肥料。
因为他那

得
,从这个意思联想会帮助你理解它在标题中
野仙踪(精简版)
色


