beam switching
波束转换射束变向射束转换法
热门单词
- ball-bearing trolley of chain
- ball-bearing wire
- ball-bearing with clamping sleeve
- ball-bearing with filling slot
- ball-bearing with taper bore
- ball-cock
- ball-driving contact-type air plug gauge
- ball-float liquidlevel meter
- ball-cock assembly
- ball-frame carriage
- ball-plant
- ball-joint
- ball-joint manipulator
- ball-jointed screw
- ball-indentation hardness
- ball-pane hammer
- ball-race bearing
- ball-race fit
- ball-shooting
- ball-race
- ball-race mill
