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????????????????????????VTX??л??????????????????VRack???VTX????????????佻?????????????????VRack???????????????????????????????????????κ???????????????????л???????????????????
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????VTX?????SAFE????????????Ч?????????????????????????????????????????????????????????????????????????????????????????????Ч?????????????????????????????????λ?????????????????????Ч??????????????Angle Stop Mechanism (ASM) ?????????????????????????????Laser Sighting Module??????????????????????????н???????????
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