发布时间:2025-02-06 02:56:04
一般,圆柱销孔的公差取H7。比如说8mm的销钉,销钉孔应该是Φ8H7。
5mm的销钉,4.8或4.9的销钉孔可是不行的,按上述方法取销孔尺寸。
另外,销孔一般是配做,一致性好。如果分别做销孔的话,坐标尺寸要求是非常严的,±0.01。
家庭装修需要改装部分电线和开关的位置,请问地线,火线和零线都用同一种颜色的线可以吗
2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04我家有棵古树罗汉松树高12米左右树龄至少300年请问该怎么养护啊
2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04 2025-02-06 02:56:04