精确地预计弯头和管件的影响尚无方法可循.No methods are available for the accurate prediction of the effect of bends and fittings.我们常用弯头(管、兰、通、小关)为一种管件.We usually use elbow flangetee, reducer as a kind of pipe fitting.在人井2中,将弯头卸下,便于设备进入.Debu...
“明天早上见。”休冷冷地说。"I'll see you in the morning," Hugh said coldly.妇人冷冷地看着他，说道：“别没正经了。”The woman eyed him coldly. "Don't be facetious," she said.珍妮特·马格努森冷冷地看着他走过来。Janet Magnusson watched his approach without enthusi...
What first attracted me to her was her incredible experience of life...她离奇的人生经历最先吸引了我。What kids experience now is an uneven rate of development. They are forced to be older than their years.小孩子现在的问题是成长速度不均衡。他们被迫变得比自己的实际年...