Pre-expanded bead
[化] 预发颗粒
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
a. 扩充的；展开的
bead
[bid]
n. 有孔小珠，念珠;水珠，露珠;珠子项链;
vt. 用小珠装饰;使成串珠状;
vi. 形成珠状;起泡;
🗣️ 情景例句
Hi, Son. Is everything all right?
嗨 ，孩子 一切都顺利吗？
Well, I'm still feeling a little homesick and so many things seem strange to me.
噢，我还感到有点想家。而且这里的很多东西我还不习惯。
so every so often a sample is obtained with a coring bit.
因此时常要用取芯钻头取样。