曲线记录仪 meaning in Chinese

chart recording instrument

Test method for d - c magnetic properties of materials using ring and permeameter procedures with d - c electronic hysteresigraphs
使用d - c电子磁滞曲线记录仪响铃和磁导仪程序的材料的d - c磁化特性测试方法
Standard test method for dc magnetic properties of materials using ring and permeameter procedures with dc electronic hysteresigraphs
使用d - c电磁滞曲线记录仪的参数处理和环型材料的d - c磁性能的标准试验方法