提出了一种数学模型来描述试验中沟宽的周期性形态变化。
A mathematical model was advanced to describe these changing patterns of rill width.
慌乱中,他爬到沟里,平躺在地上。
In a panic, he scrambled to the ditch and lay flat on the ground.
在这次测量中,巴格达沟(Baghdad Sulcus)附近的温度超过180开尔文(零下135华氏度,约合零下93摄氏度),并且有可能超过200开尔文(零下100华氏度,约合零下73摄氏度)。
In the measurements, peak temperatures along Baghdad Sulcus exceed 180 Kelvin (minus 135 degrees Fahrenheit), and may be higher than 200 Kelvin (minus 100 degrees Fahrenheit).
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