With combining optimization method, an optimal model of determining synthetic surface roughness coefficient in film hole irrigation was developed.
实例计算与方法验证表明，该方法能够简单而有效地确定膜孔灌溉田面综合糙率系数。
The stability of the worktable will affect the surface roughness of the hole wall, which will affect the hole size precision seriously.
工作台进给的平稳性会影响孔壁的表面粗糙度，严重时会影响孔的尺寸精度。
As for the problem of surface roughness measure of deep hole in measure field, developed a kind of portable micro-control surface roughness instrument.
针对测量领域深孔表面粗糙度测量存在的问题，研制了一种便携式微控表面粗糙度检测仪。
The fine spur gear with good size-precision and surface-roughness is obtained through two-stage hole-forming process scheme and reasonable die structure design.
选用两阶段成形工艺和合理的模具结构，制备出了具有良好尺寸精度和表面粗糙度的精密齿轮。
Thanks to the soft sleeve material, anchorage is achieved by the flow of sleeve material into the surface roughness of the drilled hole.
由于套筒材料相对为软性，套筒材料被压入攻丝工件的粗糙表面。
Thanks to the soft sleeve material, anchorage is achieved by the flow of sleeve material into the surface roughness of the drilled hole.
由于套筒材料相对为软性，套筒材料被压入攻丝工件的粗糙表面。
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