But the entry Angle and the depth of the screw must be accurate.
但要注意进钉的角度、方向和深度，同时宜采用相应的加强螺钉稳固性的措施。
He said: "the two screw base at an Angle of 45 degrees, ten little nails."
他说： “两个45度的螺口灯头，十个小钉子。”
Straight-through, right angle cast steel screw down vertical storm valve.
直通、直角铸钢可闭立式防浪阀；
Straight-through, right angle cast steel screw down vertical storm valve.
直通、直角铸钢可闭立式防浪阀；
应用推荐