柯林斯英汉双解大词典
groundspeed /ˈɡraʊndˌspiːd/
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1.
N the speed of an aircraft relative to the ground (飞机)对地速率 → compare airspeed
双语例句原声例句权威例句
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The frequencies of the returned beams are compared with them to obtain the true ground speed.
将它们与反回射束作对比而获得真实的地面速度。
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PF cotton yield monitoring system is consisted of a yield monitor, cotton flow sensor, head height sensor, ground speed sensor, fan speed sensor. GPS receiver and other components.
PF系列棉花测产系统是由产量监视器、棉花流量传感器、割台高度传感器、地运传感器、风机转速传感器、GPS接收机和其它配件组成。
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Our speed over the ground was a miserable 2.2 knots.
我们在地面上的速度只有区区的2.2节。
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It,too,is hungry. Traveling across the ground at great speed, the cat nears the area where the pig is fighting for its life.
VOA: special.2010.04.07
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When does it hit the ground and at what speed?"
该物体何时落地,落地速度是多少
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Remember, you've got to keep track of the sign of acceleration, so if you're picking up speed towards the ground, a is negative, so it will be g plus a, but a is a negative number.
记住,一定要注意加速度的符号,所以当你加速下降的时候,a 是负的,还是 g 加上 a,但是 a 是负数
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