Its major parts-the operating principle and circuit feature of drivers, the equipment for measurement of telescope position and infrared photometer are introduced.
详细地描述了它的主要部份——驱动装置，测角装置、红外光度计的工作原理和电路特点。
Its major parts-the operating principle and circuit feature of drivers, the equipment for measurement of telescope position and infrared photometer are introduced.
详细地描述了它的主要部份——驱动装置，测角装置、红外光度计的工作原理和电路特点。
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