近球形 meaning in Chinese

subsphaeroidal

Under better experiment conditions , the finally production fe has about 100nm diameter , oxygen content 2 . 0 % , uniform , almost sphere . the results in this paper have shown that super fine powder of fe can be prepared by this route . this make the scientific bases for reusing of feso _ 4 . 7h _ 2o and
经检测，在较佳前驱体制备条件和较佳还原、钝化条件下，本工艺的最终产物- fe粒度在100nm左右，均匀，近球形，氧含量2 . 0 %左右。