From Cairo came expressions of regret at the attack.开罗对此次攻击表示遗憾。Cairo has only thirteen square centimetres of green space for each inhabitant.开罗居民的人均绿地面积仅13平方厘米。Cairo is the capital of Egypt.开罗是埃及的首都。...
这种性质通常称为 “ 螺旋性”, 可以用来区分中微子和它的反粒子.This property, often called " helicity,'serves to differentiate the neutrino from its antiparticle.API螺纹啮合后存在的螺旋性间隙是导致螺纹接头泄漏的根本原因.It is the helical clearance area in API connections ...