The results show that the walnut shell on a certain removal of iron in water.
结果表明核桃壳对铁有一定的去除效果。
Super fine walnut shell used widely now and will be used more widely in the future.
核桃壳超细粉的用途比较广泛，具有广阔的市场前景。
In this way, the walnut shell fell off, she gave a complete walnut kernel to Sima Guang.
这样，核桃壳一下就掉了，她把一个完整的核桃仁交给司马光。
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