稀疏波分复用 CWDM

追赶稀疏波速度 overtaking rarefaction velocity

宁波溲疏 Deutzia ningpoensis

稀疏波 [流] rarefaction wave

稀疏激波 dilatational shock

稀疏微波 rare tiny reflection

疏密波 Dilatational wave ; wave of condensation and rarefaction

冲击波稀疏区 rarefaction phase of blast wave