A down - hole autotracking well pumping unit different from the conventional pumping unit was designed.针对抽油技术的现状和存在的问题,设计了一种不同于有杆抽油方法的井下自动跟踪式抽油装置.It is autumn and they are pumping water out of the swimming pool.入秋了, 他们正在...
There is a pumping station on the edge of the lake.湖边有座扬水站.He was pumping away.他正用抽水机抽水.Aerobic exercise gets the heart pumping and helps you to burn up the fat.有氧运动加速心脏跳动，有助于消耗更多脂肪。...
Objective To observe the effect of full thickness lamellar keratoplasty combined with PTK ( photo therapeutic keratectomy ) .目的探讨联合 PTK 的全厚植片深板层角膜移植术的疗效.Objective To observe the application of viscoelastics in penetratin...
He had seen giant concrete bunkers deep in the earth.他看到巨大的混凝土地下室修建在很深的地底下.Sir, there are bunkers on both sides of the green.先生, 你想用哪一支杆?Here, you see 15 munitions bunkers in yellow and red outlines.从这里, 你们可以看见15个黄色轮廓和红色...
Her dwarfish spouse still smoked his cigar and drank his rum without heeding her.她那矮老公还在吸他的雪茄,喝他的蔗酒,睬也不睬她.Rest no longer satisfied with thy dwarfish attainments , but press forward to things and heavenly.不要再满足于属世的成就, 要努力...