1. an alternating-current motor (2) which drives with the alternating-current power outputted by the power converter (1) and makes the electric car run; 利用功率变换器（1）所输出的交流功率进行驱动、并使电车行驶的交流电动机（2）；
2. The high voltage supply to the test electrode shall be either alternating current, direct current, high frequency current or impulsed current as specified in 4. 1. 通常采用的测试高压电源有交流、直流、高频和脉冲。在4。1中有详细介绍。
3. light energy electric current:Direct current and conversion and produce of alternating current, can stimulate motor nerve cell and promote skin shrink , tighten. 3光能电流：直流电和交流电的转换而产生的，可刺激运动神经细胞并促进肌肤收缩\紧实。
4. 3 / light energy electric current:Direct current and conversion and produce of alternating current, can stimulate motor nerve cell and promote skin shrink , tighten. 3光能电流：直流电和交流电的转换而产生的，可刺激运动神经细胞并促进肌肤收缩\紧实。
5. Polyphosphazenes are a novel biodegradable polymer with an inorganic backbone composed of alternating single and double covalent bond and alternating phosphorous and nitrogen atoms. 聚磷腈是一族由交替的氮、磷原子以交替的单键、双键构成无机主链的新型可生物降解聚合物。
