open hole的用法和樣例：
例句
- The open rectangles represent typical elements of the ion fluid.
空心的矩形表示典型的離子流體元。 - Generally, one approximates a blockbody in the laboratory by a hollow insulated enclosure which contains a small hole in the wall.
一般地說(shuō)，人們在實(shí)驗室中用壁上帶有一個(gè)小孔的空心絕緣殼來(lái)近似模擬一個(gè)黑體。
