hollow pipe meaning in English
空心管子
Examples
- Desalination is carried out by simply lowering into the ocean a long, hollow pipe capped at the lower end by a semipermeable membrane .
用一根长空心尼龙管插入海水里，并用半透膜封住较低的一端来进行海水淡化。 - Hollow pipe examination in electomagnetic flowmeter
电磁流量计的空管检测