宋代建筑规定外草10/1000，两山向内倾斜8/1000。而角柱在两个方向都有倾斜，从而使建筑获得较好的稳定性。但在明清已不常见。
这包括野草在直角和侧角、悬崖壁及边缘、岩石和杂草等情况。
This includes several wild grasses at both a straight-on Angle and side Angle, the cliff wall, cliff edge, rock and grass mixture, etc.
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.
Aclima 阵列中的站是三角形的，沿一侧测量20厘米。
The stations in Aclima's arrays are triangular and measure 20 cm along a side.
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