Phosphinate
亚膦酸盐, 亚膦酸酯
🗣️ 情景例句
Hello. This is an emergency. Can you please send an ambulance?
喂，这儿有急病患者，请派一部救护车来。
Shall we go to the cinema?
我们去看电影好吗？
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。