英 [ɪmˈpiːdns] 美 [ɪmˈpiːdns]
n. [电] 阻抗
impedance /ɪmˈpiːdəns/
名词 a measure of the opposition to the flow of an alternating current equal to the square root of the sum of the squares of the resistance and the reactance, expressed in ohms 电阻抗 ( symbol: )
a material's opposition to the flow of electric current; measured in ohms
同义词： electric resistance / electrical resistance / resistance / resistivity / ohmic resistance
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...功率（peak)。其中额定功率是最准确的输入功率数据，其他两个名称只是表明音箱瞬间负荷能力，没有多少实际意义。 阻抗(impedance)：音箱单元的交流阻抗，一般为4欧姆，8欧姆和16欧姆，个别品牌例外，采用12欧姆6欧姆3欧姆。
...连接负极板。 多刀头选择：各种环形、球形、刀形、针形、方形、旗形刀头可选。 启动模式：双脚踏开关，手控开关。 操作面板控制调节防水设计，易于清洁，消毒。 按触式按键，能快速，精确的调节参数。 治疗主机及吸烟器声音能调节大小。 安全报警：治疗时负极板脱落、负极板连接线未连接主机或负极板不能达到形成负极效应时报警。 极板回路监控系统：在负极板连接或者连接线出现故障时自动关闭输出，并发出声光警报。 阻抗（IMPEDANCE）、功率（POWER）、时间（TIME）显示；功率自动补偿（PAC）、输出（WORK）、电源（POWER）、 报警（WARN）指示。
文章详细信息 关键词： 肿瘤热疗;温度;肝组织;电阻抗 [gap=1156]Keywords: hyperthermia;temperature;liver tissue;impedance
impede 阻碍；妨碍；阻止
Match impedance to long-cycle database administration.
与长周期的数据库管理的匹配阻抗。
The structures perform similarly to an object covered with the surface impedance.
该结构能起到消除表面阻抗的作用。
It does so by measuring the signal without drawing current, using "high impedance" sensors.
它使用“高阻抗”传感器来测量信号，而不是制图电流。
What you need is the scale that not only weighs you, it uses bio-electrical impedance to measure your body fat.
According to the NTSB, which is investigating the crash, maintenance records show that an "impedance bond" for the track circuit where the accident occurred was replaced June 17.
CNN: NTSB says train detection system failed in days before D.C. crash
Even with distributed elements of what appears t be a miniature LOG PERIODIC antenna will have some difficulties with proper impedance matching, ohmic losses and inductance issues to say the least.