词汇	啮合时间
释义	啮合时间 engagement time
随便看	principle of observability principle of occupier's liability principle of of non-extradition principle of one man management principle of open-close cycle principle of openness principle of openness and fairness principle of operation principle of optical equivalence principle of optical triangulation principle of optical trigonometry principle of optimality principle of optimal relevance principle of optimization principle of orality principle of order principle of organic structure principle of organic unity principle of organization principle of orientation on prac-tice Principle of original lateral continuity principle of over all integration principle of overflow principle of over-half reliability principle of oxidation