Design and implementation of miniaturized dual-band rat-race coupler .

微型化双频环形耦合器之设计与制作。

Without seeing a universal hose coupler ?

没见过万能软管接头吗?

Where does disembark the coupler sitting beside ?

坐在身旁的伴侣在什么地方下车？

Autoclave , magnetic force mixing coupler .

高压釜、磁力搅拌耦合器。

Notice : the explosion-proof telephone can be used normally only equipped with bhe coupler .

注：防爆电话机必须配装耦合器才能正常使用。