The utility of impedance monitoring in refractory reflux patients with primary complaints of chest pain or extraesophageal symptoms is unproven.
在最初抱怨胸痛或者食管外症状的难治反流病人，阻抗检测有效性未得到证实。
While fulfilling the qualification of test technique, it can test the voltage, current, time and insulation impedance for 13 kinds of time mechanisms, and has replaced 13 primary test equipments.
在满足测试技术指标的前提下，能够完成对13种定时机构产品的电压、电流、时间和绝缘阻抗等性能的测试，取代了原有的13个不同的测试仪器。
The primary errors caused by an impedance mismatch are the frequency response and amount of squarewave ringing.
最初因为不正确的阻抗匹配所导致的数据错误值是在频响方面及方波震铃。
The primary errors caused by an impedance mismatch are the frequency response and amount of squarewave ringing.
最初因为不正确的阻抗匹配所导致的数据错误值是在频响方面及方波震铃。
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