Clinical and mechanical studies progress on treatment of malignant tumour by ultralow frequency pulsed - gradient magnetic fields 半梯度磁场治疗恶性肿瘤的临床和机理研究进展
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Series of general - purpse instruments : including series of 2800 and 2500 electronics compoment parameters testing meter and related products ; series of 1630 function signal generator ; 1250 ultralow frequency spectrum analyzer and signal generator 通用类仪器系列:包括2800系列、 2500系列元件参数测量仪及其配套产品; 1630系列函数信号发生器; 1250超低频系列频谱分析仪及信号源。