Envelop curve
[经] 包络曲线
🧩 词语组成解析
envelop
[in'veləp]
vt. 包围，包住;笼罩，遮盖;
curve
[kɝv]
n. 弧线，曲线;曲线状物;弯曲物;[棒]曲线板;
vt. 使弯曲;使成曲线;使成弧形;
vi. 弯曲;弯成曲线，弯成弧形;沿曲线行进;
adj. 弯曲的;曲线形的;
🗣️ 情景例句
Why is he blowing his horn like that?
为什么他这样子按喇叭？
This product is doing very well in foreign countries.
这种产品在国外很畅销。
Rescue workers are therefore drilling a hole on the north side of the mine.
因此，营救人员在矿井的北侧钻了一个洞。