There are many advantages for the new method of noncontact measurement employing the sensor for measuring piston ring endgap clearance dimension.
用其检测活塞环闭口间隙尺寸，是一种新的非接触式测量方法，具有许多优点。
2
A cheaper range of products was introduced to plug the gap at the lower end of the market.
推出相对廉价的一系列产品，是为了填补较低档市场的缺口。
《牛津词典》
3
As a result, their math grades overtook those of the other students by the end of the first semester — and the gap between the two groups continued to widen during the two years we followed them.