电能量计量计费
power telemeter and settlement system
电能量计量计费系统
power energy billing system
telemeter reading system
the System of Measuring and Billing of Power Energy
tele meter reading system
光合成的量子数量
quantum yield of photosynthesis
轨道角动量量子数
obit angular momentum quantum number
quantum numbers of orbital angular momentum
计量－计数法
variables-attributes method
角动量量子数
angular momentum quantum number
angular momentum quatum numbe
angular quantum number
angular-momentum quantum number
量子计量基准
quantum measurement standards
quantum measurement standard
量子计量三角形
Quantam metrological triangle