环面可由矩形把其两对对边分别重叠起来而得到.A torus can be obtained from a rectangle by identifying opposite sides.所以就拓扑学而言, 球和环面是不同的东西.Topologically, then, a sphere and a torus are distinct entities.平面包络环面蜗轮副具有优良的啮合性能,它是一种具有广阔应用前景的传动形式.Worm ...
They appeared on the dot of 9.50 pm as always.他们和往常一样在晚上9点50分准时出现。The PM presided over a meeting of his inner Cabinet.首相主持了一次核心内阁会议。The PM pledged to make life better for the poorest families.首相承诺改善最贫困家庭的生活状况。...
Fish is inexpensive, easy to cook and very digestible.鱼价格便宜，容易烹调，且味美可口。Metered taxis are relatively inexpensive.打表计价的出租车相对便宜。a relatively inexpensive hotel相对廉价的旅馆...
none的近义词/同义词有：not, in, way, no, at, all, to, extent, no, a, not, one, soul, nary, never, nobody, bit, not, whit, any, iota, a, thing, an, jot, speck, nothing, no, none, at, part, all, naught, zero。adv.none的近义词（一点也不）：not,...