浑圆度取决于边角的锐度或曲率半径.Roundness depends on the sharpness or radius of curvature of the edges.形状描述该颗粒外形,不考虑颗粒边角的锐度.Shape describes the form of the particle without reference to the sharpness of its edges.主要指标LogMAR视力 、 最佳矫正视力 ...
These chaps know their stuff after seven years of war.7年的战争过后，这些家伙都成了作战行家。These chaps know what side their bread's buttered on.这些家伙知道怎样做对他们有利。Hard luck, chaps, but don't despair too much.真不走运，伙计们，不过别太灰心。...