例如，锥螺纹、梯形螺纹、三角螺纹等。
For instance, awl thread, ladder-shaped thread and triangle thread etc.
在螺纹材料、尺寸、载荷都相同的情况下，三角形螺纹牙所受的剪应力最小，断裂载荷也比梯形螺纹和矩形螺纹高。
In the same material, dimension and load circumstance, the cut stress of the triangle thread is smallest. Its rupture load is higher than the echelon and rectangle.
使用的刀具外形必须正好与要切削螺纹的轮廓一致，即三角形刀具必须用于三角形螺纹等等。
The form of the tool used must exactly coincide with the profile of the thread to be cut, i. e. , triangular tools must be used for triangular threads, and so on.
锯齿型螺纹种植体的稳定性比三角型螺纹好。
The stability of saw-toothed thread implants is better than "V" thread.
这组算式也适用于对称三角形螺纹。
This set of formulae fits for use also in symmetrical triangular screw threads.
本实用新型包括三角支架本体，三角支架本体上设置螺纹通孔，在三角支架本体的一个侧边上设置加强筋。
The utility model comprises a triangle bracket body, a thread through hole arranged on the triangle bracket body, and a reinforcing rib arranged on one lateral side of the triangle bracket body.
本文考虑了非对称三角形螺纹的螺距偏差和牙侧角偏差的各种组合对作用中径的共同影响，运用了包容图位移法，分析和推导出非对称螺纹作用中径的精确计算公式。
By the use of the displacing enveloping drawing method, a set of exact formulae for calculating the virtual pitch diameter is deduced and verified by measured data.
本文考虑了非对称三角形螺纹的螺距偏差和牙侧角偏差的各种组合对作用中径的共同影响，运用了包容图位移法，分析和推导出非对称螺纹作用中径的精确计算公式。
By the use of the displacing enveloping drawing method, a set of exact formulae for calculating the virtual pitch diameter is deduced and verified by measured data.
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