英语语法分析

The thermal nonreciprocity in sensing coil is one of sources induced temperature drift in FOG , so the fiber loop is usually wound by quadrupole(QAD) symmetrical technique.

敏感线圈的热非互易性是引起光纤陀螺温度漂移的重要因素之一，因而人们多采用四极对称技术（QAD）绕制光纤线圈。