... 维生素 "vitamin vitamine""" V形垫圈 V packing 三角皮带传动 V-belt drive ...
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V-packing V形橡胶密封
V-cup packing V形垫圈
V-ring packing V形密封圈
V vacuum packing 真空包装
It joins the US Marines famed V-22 Osprey as the second such aircraft on earth and is the first unmanned aircraft packing the technology.
ENGADGET: South Korea creates speedy new UAV, gives it VTOL capabilities to boot
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