科学家们对一种称为“气化”的处理过程进行了改进，这个过程以前就已应用于清理发电或可再生燃料制造中所使用的不清洁原料。
Scientists have adapted a process called "gasification" which is already used to clean up dirty materials before they are used to generate electricity or to make renewable fuels.
中国正在清理非法象牙交易的说法在3月份再次得到了肯定，超过750公斤的原料象牙在广西被截获。
The idea that China is cleaning up its act got another boost in March, when over 750kg (1,650lb) of raw ivory was seized in Guangxi Province.
本机主要用于大米、面粉、饲料、油脂、食品和化工等工厂，设置在清理工序，用来清除原料中的大、中、小和轻杂质；
TQLZ series vibrating cleaning sieve is suitable for the rice plant, flour plant. feedstuff plant and the other plant to remove the impurity mixed in the raw material.
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