The selected caproic acid bacteria could then be used in the maintenance of artificial pit mud and the operation of sandcast technique and pit irrigation technique.
可将选育出的己酸菌用于人工窖泥、窖池泥养护、翻沙材料及灌窖工艺中。
2
So you're wondering how to cast metal in sand.
所以，你想知道如何在砂铸造的金属。
3
Seen from above, the shadows cast onto the sand created shifting patterns like sundials.