1. main technical specifications如： ResultsThe main technical specifications of the LK-4 detector were as follows,size: 230 mm×80 mm×210 mm; 结果LK-4有害气体检测仪主要技术指标:体积为230 mm×80 mm×210 mm;2.main specifications 如： Oil Well Cement Testing Instrument Function Main Specifications 油井水泥测试仪器功能及主要技术指标3.main technical targets 如：MAIN TECHNICAL TARGETS AND THEIR EFFECT OF EQUIPMENT MANAGEMENT 设备管理主要技术指标及其作用4. main technical specification希望帮到你