Therefore the acceleration since I call - that the "plus x direction"-- that was my plus sign-- must come out plus.

因此加速度必然,是在x正方向-,这里是正好，必然如此。

youdao

To find the time to consider, what did during the day, it is plus or minus sign, if is a very good plus.

要找出时间来考虑一下，一天中作了什么，是正号还是负号，假如是正号很好。

youdao

To find the time to consider, what did during the day, it is plus or minus sign, if is a very good plus.

要找出时间来考虑一下，一天中作了什么，是正号还是负号，假如是正号很好。

youdao