【单选题】The weather seemed perfect ______ fishing that day, I remember. [ ]
【简答题】使两构件通过点或线接触形成的运动副叫 。
【简答题】两构件通过点或线接触形成的运动副称为 。
【简答题】两构件通过( )或( )接触形成的运动副称为高副。
【简答题】The other day I decided to come home early because it was such a beautiful day. The were outside playing in my apartment complex (公寓大楼) and the ice cream truck was whistling its tune. As I slowly to a...
【判断题】两构件之间通过点或线接触形成的运动副称为高副