We need to know that energy consumption represents the single largest controllable operating expense for a building, typically a third of variable expenses.
我们应当认识到，能源消耗是建筑物的唯一一项最大的但可控制的营运费用，一般为可变费用的三分之一。
All electronic SS type camera tube is characterized by its low expense of power, variable scan frequency, high resolution, small size and light weight.
采用图案电极的静电聚焦静电偏转(SS型)摄像管，具有功耗低、扫描频率可变、分辨率高、体积小和重量轻等优点。
All electronic SS type camera tube is characterized by its low expense of power, variable scan frequency, high resolution, small size and light weight.
采用图案电极的静电聚焦静电偏转(SS型)摄像管，具有功耗低、扫描频率可变、分辨率高、体积小和重量轻等优点。
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