AN316-4R 是内径为 1/4 英寸的右旋并紧螺帽 关于航空构件的
AN316-4R 是内径为1/4英寸的右旋并紧螺帽 AN316-4L 是内径为1/4英寸的左旋并紧螺帽 AN是空军...
(1R,3S,5S,7S,10S,11S,12S,14R,15R,18R)-12,18-Dihydroxy-7-[(2R,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-10,14-dimethyl-15-(5-oxo-2H-furan-3-yl)-2-oxapentacyclo[9.7.0.01,3.05,10.014,18]octadecan-13-one的沸点是多少? (1R,3S,5S,7S,10S,11S,12S,14R,15R,18R)-1...
I don't/didn't know Bob very well,but we go/went out for an occasional drink together. 我们应该都去火车站接她。相关知识点: 试题来源: 解析 The noise woke us up in the middle of the night. 他不该对我说的话表示生气,那仅仅是个玩笑而已。