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fillet; flight (齿); screw-thread | |||
gyrus; spiral marking | |||
flight | |||
spiral burr | |||
bolt thread | |||
worm; thread | |||
screw | |||
spiral ridge | |||
ridge | |||
screw flight; spiral flight | |||
helical burr; rib weave; whorl; spiral | |||
screw thread | |||
| |||
Omega thread | |||
| |||
whorl | |||
| |||
screw thread | |||
| |||
screw flight | |||
| |||
thread | |||
| |||
thread | |||
| |||
flight |
螺纹 : 2601 phrase in 55 subjects |