他说，废水自然处理系统的费效比也比人工废水处理高20多倍。
Natural wastewater treatment systems, he says, are more than 20 times more cost effective than man-made alternatives.
多效唑处理得到的试管鳞茎移栽成活率比氮素处理的高，同时叶片也较宽；
The bulblets which formate by paclobutrazol have better effect than bulblets which formate by nitrogen treatment.
应用推荐