您要查找的是不是：
- 单U型管single U tube
- 单U、双U型埋管single U shaped and double U shaped vertical borehole
- 单级U型管single-stage U-tube
- 管pipe
- 单U形坡口single-U groove
- U型管换热器U-tube heat exchanger
- U型管埋地换热器U-pipe heat exchanger
- U型U shape
- U型壳U - shell
- 单端型管[电] single-ended tube
- U型槽U -Shape Groove
- U型箍U-ferrule
- U型拉槽U cutting
- U型挡板U stop prate
- U型管传热量影响因素的数值模拟研究NUMERICAL STUDY ON THE INFLUENCING FACTORS ON THE HEAT TRANSFER OF THE U-TUBE
- U型螺钉U type screw
- U型结构U-Structure
- U型管地下换热系统非稳态传热数值模拟NUMERICAL SIMULATION OF HEAT TRANSFER OF A U-TUBE GROUND HEAT EXCHANGER
- U型弯曲U-bending
- U型手柄U-handle
