... source water for drinking 饮用水源水 light requirement 需光度 light requirement 需光量 ...
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minimum light requirement 最小需光量
relative light requirement 相对受光量
Find out your plant’s foot-candle requirement, which is how many candles it would take to light the plant from one foot away.
找出植物所需要的“英尺烛光”,即在一英尺的距离需要点多少蜡烛来提供它光。
Given realistic propulsion options, and the requirement that the spacecraft can slow down to orbit its target, the target star cannot be more than 15 light-years from Earth.
根据实际的推进选择,以及航天器能够减速以环绕其目标公转的需要,目标恒星不能离地球超过15光年。
Experiment results showed that the newly developed material is soft, high insulation, and light weight, which can meet the requirement of protection device on main body packaging material.
实验结果表明,该材料的质软、高阻隔、质轻等良好性能,能满足防护装置对其主包体材料的需求。
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