The method was established for purification of diflubenzuron by crystal technique with mixed solvents.
本文论述了利用混合溶剂——结晶法提纯
脲的分析
。
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It's often easy to control the parasites with cheap treatments. But resources get wasted because deworming programs are targeted at the wrong communities. The atlas should help the eradication fight by letting health officials know just where the problem areas are.
其实用一些价廉的治疗方法就可以很容易控制住这些寄生虫。但是因为" 除虫计划" 搞错了对象,这些药物资源好端端的就浪费掉了。而这些地图集刚好能帮助卫生局高清楚问题地区所
,然后将虫虫们斩草除根。