例句與造句

1. Because the machine is equipped with jumping mechanism , it is unnecessary to reset the tool after returning grinding wheel for measurement or dressing
   機(jī)床設(shè)有快跳機(jī)構(gòu)，因此退出砂輪進(jìn)行測(cè)量或修正后不必重新手動(dòng)對(duì)刀。
2. In this paper , it emphasized on the influence of the supply temperature of the ground - water , the temperature difference between supply and return ground - water , the flow - rate of the well on the system , the difference area of heat exchangers
   為了解決上述問題，我們建立了地下水源熱泵系統(tǒng)實(shí)驗(yàn)臺(tái)，采用實(shí)驗(yàn)和模擬相結(jié)合的方法，對(duì)系統(tǒng)的性能特性進(jìn)行研究分析。
3. The experimental results showed that : in the summer operating mode , the refrigerating capacity and coefficient of performance of the system decreased with the increase of the temperature difference between supply and return ground - water and the water supply temperature ; in the winter operating mode , the refrigerating capacity and coefficient of performance of the system increased with the decrease of the temperature difference between supply and return ground - water and the increase of the water supply temperature . it also showed that , change the are of heat exchanger has great influence of refrigeration system
   本課題通過實(shí)驗(yàn)測(cè)試井水進(jìn)口溫度、進(jìn)出口溫差以及在不同溫差下?lián)Q熱器面積匹配對(duì)系統(tǒng)性能的影響。實(shí)驗(yàn)結(jié)果表明，夏季工況下，隨著井水進(jìn)口溫度的升高，進(jìn)出口溫差的增大，系統(tǒng)制冷量減小，機(jī)組cop降低，系統(tǒng)運(yùn)行性能惡化。冬季工況下，隨著井水進(jìn)口溫度的升高，進(jìn)出口溫差的減小，系統(tǒng)的制熱量增加，機(jī)組cop提高，系統(tǒng)運(yùn)行性能優(yōu)化。
4. It's difficult to find return ground in a sentence. 用return ground造句挺難的