beacons, which emit radiation, locating, direction-finder
能量传播方向
direction of propagation of energy【物】
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相关词条
direction non-equilibrium factor of passenger flow【交】
signal transmission of LF- in one and HF-signals in the other direction
controlling for stock travelling otherwise than in the direction of the material
reversal of rotational direction (reversal of rotation)
proximodistal direction of development
automatic direction finder
haymaker with tine-carrying members moving obliquely to the direction of travel