双师型教师
real world experienced instructor
T-对称双导
T-symmetric bi-derivation
贝雷片双导梁
beret pieces double leads girder
Bailey truss double guiding beam
双MCU双频网络节点
node with double MCU and double frequency
双导板泥浆泵阀
dual guided slush service valve
双导程圆柱蜗杆
dual lead cylindrical worm
双导磁泡装置
dual-conductor (DC) bubble device