UID:288349
图片:1.png
UID:47595
UID:213480
mumapiaoyun:差动螺纹 (2013-07-30 20:27) k L2(M6m
yu-xuegang:改变AB镜组的空气间隔。 (2013-07-30 17:00) 8px@sXI*`
seaman:你觉得A和B的两端螺纹不同 "Bl]_YPv 然后转动中间的零件,可使A/B的相对位置发生变化? (2013-07-30 22:02) q.sErr[zc
UID:284866
UID:94256
UID:289200