基本解释包络环英汉例句双语例句The optimum design of plane quadratic enveloping ring surface worm drive has been realized using the theory and method of optimization.针对平面二次包络环面蜗杆传动，运用优化理论和方法，对其进行了优化设计。enveloping ring更多例句词组短语短语simplified enveloping ring 简包络环conical face enveloping ring worn 锥面包络环面蜗杆enveloping ring更多词组专业释义数学包络环