串接交换交换
tandem switching exchange
强奇异交换交换子代数
strongly singular maximal abelian self-adjoint sub
挡板多程热交换器
baffled multipass heat exchanger
多波束换能器
multi-beam echo sounder transducer
多功能交换尸
multifunctional exchange resin
多功能交换树脂
multifunctional exchange resin
多官能交换剂
multifunctional exchanger
多管热交换器
multi-tubular heat exchanger
多频换能器
Multi-frequency transducer