I let him tag along because he had not been too well recently...我让他跟着我，因为最近他身体不舒服。This is a tag question.这是附加问句.The manager asker her to alter the mistake on the price - tag.经理要她更正价格标签上出现的错误.A photo name tag can include ...
再应用单片机和其他元件构成反馈控制网络, 组成了交流稳压器.Using SCM and element make up of feedback network, buildup AC regulator.公司主要产品: 稳压器、高低压变压器 、 电抗器.Company main products: Voltage stabilizer, high low pressure transformer, reactance implement...