UNDERLAP PLACKET下层明筒;三尖折的小袖;基层明筒;三尖折的小袖叉
underlap p从下面露出
underlap timing针背垫纱定时
underlap fuel distributing valve非遮蔽式分油活门
underlap plair conditioning unitket基层明筒
UNDERLAP PLACKET下层明筒
addition of underlap针背横移数代数和
UNDERLAP P PLACKET下层明筒