题目

How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses （感觉） how long and how well you brush, and it lets you track（跟踪） your performance on your phone. The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless （无线的） connection. The toothbrush will be able to teach you to brush right (don’t forget the insides of the teeth!) and ma一定质量的某种理想气体，当它的压强变为原来的3倍，体积减小为原来的一半时，其热力学温度变为原来的多少？试从压强和温度的微观意义进行说明.