Degeroite
硅铁石
🗣️ 情景例句
Excuse me, where can I find the shoe polish?
问一下，我到哪儿能买到鞋油？
I couldn't get through.
我打不通电话。
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。