片语
Straight angle gaerial直齿锥齿轮
a straight on angle平视镜头
a straight angle straight angle平角
straight-on angle平视镜头
Tape Measures&Straight Rules&Angle Rules卷尺(等于tapeline)
a straight angle平角
straight t angle平角
gestreckter Winkel straight angle平角
straight angle crossing thruster直角拐弯推进器