右a
原声例句
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What Thomas said was, right is never a best choice, that's true.
托马斯所说右并非总是,最优策略,这是对的
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But Righty will also say,Give me a break.
但小右也会说，拜托。
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It says, if you pull it to the right, so that x is positive, the spring will exert a force which is in the negative direction; that's why you have a minus sign.
就是说,如果你向右拉,x 取正值,弹簧产生的力方向为负,这就是这里用负号的原因
应用推荐
$firstVoiceSent
- 来自原声例句