方向控制器

beacons, which emit radiation, locating, direction-finder

direction non-equilibrium factor of passenger flow【交】

rotary switch with latch for change of direction of rotation and lost motion

signal transmission of LF- in one and HF-signals in the other direction

reversal of rotational direction (reversal of rotation)

proximodistal direction of development

automatic direction finder

haymaker with tine-carrying members moving obliquely to the direction of travel