2. The operation process of GPS(RTK) electronic
tachometer is introduced and its application in topographic survey is briefly illustrated.
本文介绍了GPS(RTK)配合全站仪的作业流程,简要阐明了其在地形测量中的应用。
3. Product package including: temperature hygrometer, noise, the digital meter, anemometer, illuminance dollars,
tachometer, water, the infrared thermometer and so on.
产品包 括:温湿度计、噪音计、数位式电表、风速计、照度 计、转速计、水份计、红外线测温仪等。