交换力的条件与同位旋完全无关.The condition of an exchange force has nothing to do with isospin.同位旋是矢量.Isospin is a vector quantity.由激光发射出的光线都是同位的.All rays leaving the laster are in phase....
We are already doing the groundwork for the introduction of the scheme next year.我们已经在为明年施行计划做些基本的准备工作。Yesterday's meeting was to lay the groundwork for the task ahead...昨天的会议是为以后的工作做准备。These courses provide the gro...
用折缝法给亮光薄呢锁边效果更好.A stitched fell makes a better finish for brilliantine.交叉''.'针'.''在缝线或刺绣时形成x形的交叉缝''.'法'. ''.A double stitch forming an X in sewing and embroider...