Dall流量管是具有特别高的压头补偿的实验装置.The Dall flow tube is an empirical design with an extremely high pressure head recovery.当下游压头大于上游压头约3/5时, 流量是潜流.When the downstream head is greater than about 3 / 5 of the upstream head, flow is s...
Most antelopes, for example, can withhold their young for weeks, even months.例如, 绝大部分羚羊能把分娩期推迟几个星期, 甚至几个月.It was unscrupulous of their lawyer to withhold evidence.他们的律师隐瞒证据是不道德的。You have the right to withhold your custom...
一名男青年从陡峭的岩壁上坠崖身亡。A young man plunged from a sheer rock face to his death.她又开始沿着陡峭的山路往上爬。She started once again on the steep upward climb.丽东酒店位于陡峭的半山腰上。The Newton Hotel is halfway up a steep hill....