简称是为了方便沟通记忆,所以一般常用的,或者有一定纪念意义的会有简称 也没必要所有的物质都有简称 常见的简称 只要输入简称字母 都能在网上查到对应的化学物质
The item listing says "30 Pony O Hair Bow Streamers 83 styles" so that means I can pick 30 ribbons from the different sets, 1 ribbon out of the 10 different ones in each ribbon bunch, cuz each individual ribbon doesn't have a number, just the bunc 我抱歉是这样痛苦在您知道什么,但i'...