velleity 意志薄弱...velocimeter 速度计...velocity 速度
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vein stripper 静脉支剥除器...velocimeter 流速计，速度计...velocitron 质谱仪
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vellum paper 羊皮纸...velocimeter 临仪...velocity constant 速度常数
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velocimeter 速度计...velocimeter 速度计水中声速测定仪...velocity along route 沿航线速度沿计划航线的航速
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