光束液位侦检器 liquid level detector: 液面检测器; 液位检测器; 液位检查器portable liquid level detector: 便携式液位检测器float-actuated liquid level detector: 浮子式液位检测器light beam level wheel gauge: 光束水准车轮定位; 光束水准车轮仪liquid detector: 液体检波器下载手机词典可随时随地查词查翻译