白玉蜗牛
- 网络white jade snail;helix pomatia
白玉蜗牛-
白玉蜗牛微量元素的测定方法研究
Study of Determination Method of Trace Elements in White Jade Snail
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福春白玉蜗牛开发研究所。
Fu Chun white bowlder snail develop graduate academe .
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从一开始的三只白玉蜗牛，到现在四世同堂的60多只蜗牛，孙悠翔在自己的科学课作业上做得很出色。
From three white jade snails at the very beginning to more than 60 snails of four generations now , he has done a great job in his assignment for his Science class .