At present , the widely-used pumping unit is the surface drive device in the rod pumping system.
抽油机是有杆抽油系统的地面驱动设备.
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地面亮度温度的测量值随观测天顶角、方位角和太阳位置而改变。
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Dependence of infrared emissivity on view zenith angle for natural ground surfaces
地面热红外发射率的天顶角变化效应
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Cairo provides merely one square centimetre of green space per inhabitant.
开罗为每位居民提供的绿地面积仅为一平方厘米。
金山词霸
A ball of fire seemed to fall out of the void, disappearing before it reached the earth.
一个火球似乎从天外飞降而来,在到达地面前悄然失踪了。
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Fox News reported that two helicopters had joined ground and water efforts to find the boy.
此外,据福克斯新闻报道,两架直升机也已加入对该男孩的地面和水域搜索工作。
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在毫米波和亚毫米波段,地面观测受到多变的大气不透明度的普遍影响。
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One of the prevalent methods in traffic control is ground holding based on traffic flow management.
交通流量管理的地面等待策略是当前我国空管工作中实际应用的一种方法.
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Secondary Surveillance Radar the ground picks the data and displays it on the ATC radar screen.
地面的二次监视雷达接受到数据并把数据在空管雷达屏幕上显示出来.
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The voltage between the real or virtual neutral point and the earth.
多相系统中,实际的或等效的中性点与参考地面之间的电压.
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Effects analysis of natural gas hydrate in surface testing and Technology Countermeasures
地面测试中天然气水合物影响分析及工艺技术对策
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