open hole

• 裸井,裸井段,空心

open hole的用法和样例：

例句

1. The open rectangles represent typical elements of the ion fluid.
   空心的矩形表示典型的离子流体元。
2. Generally, one approximates a blockbody in the laboratory by a hollow insulated enclosure which contains a small hole in the wall.
   一般地说，人们在实验室中用壁上带有一个小孔的空心绝缘壳来近似模拟一个黑体。