
传导速度
EMG showed a delayed nerve conduction velocity.
肌电图示周围神经传导速度减慢。
Sensory and motor nerve conduction velocity reduced.
感觉及运动神经传导速度变慢;
The parameters used included motor conduction velocity (MCV);
运动神经传导速度(MCV);
Conclusion: Conduction velocity is a sensitive parameter in intraoperative monitoring.
结论:传导速度是较敏感的术中监测参数。
Detecting record of nerve conduction velocity was the standard of objective evaluation.
客观评估标准为神经传导速度检测记录。
"Conduction velocity"(传导速度)是一个跨学科的术语,主要应用于生理学和物理学领域,其具体含义需结合上下文理解:
神经科学领域
指神经纤维传导电信号(动作电位)的速度,单位为米/秒(m/s)。例如,人体有髓鞘的Aα类神经纤维传导速度可达80-120 m/s,而无髓鞘的C类纤维仅0.5-2 m/s。髓鞘化程度和轴突直径是主要影响因素,髓鞘通过跳跃式传导(saltatory conduction)显著提升速度。
心脏电生理领域
特指心脏电信号在心肌组织中的传播速度,正常心脏的房室结传导速度约为0.05 m/s,而浦肯野纤维可达4 m/s。传导速度异常会导致心律失常,如房室传导阻滞时速度下降,可能引发心跳过缓。
物理学领域
泛指热量或电流在介质中的传递速率。例如铜的导热系数约401 W/(m·K),而热传导速度与材料的热容、密度相关;电导体的电流传导速度接近光速(约3×10⁸ m/s),但电子实际漂移速度仅毫米级每秒。
该参数在医学诊断中有重要应用,如神经传导速度检测可诊断周围神经病变(糖尿病神经病变、吉兰-巴雷综合征),心电图(ECG)则通过分析心脏传导速度异常判断心肌梗死或传导系统疾病。
conduction(传导)
例句:Heat conduction occurs when heat moves from a warmer object to a cooler one through a medium, such as metal or air.(当热量通过介质(如金属或空气)从一个较热物体传递到较冷的物体时,热传导就会发生。)
用法:Conduction refers to the process by which heat, electricity, sound, or other forms of energy are transmitted through a material or substance without any apparent movement of the material or substance itself.(传导是指在无任何明显物质运动的情况下,热、电、声音或其他形式的能量通过物质或物质本身传递的过程。)
解释:Conduction occurs when energy is transferred from one object to another by direct contact. The transfer of energy occurs through the vibration of atoms or molecules in a substance. The energy moves from the hotter object to the cooler object until both objects reach the same temperature.
近义词:Transmission, transfer, propagation.
反义词:Insulation, retention, reflection.
velocity(速度)
例句:The velocity of the car was measured using a radar gun.(使用雷达枪测量了汽车的速度。)
用法:Velocity is a measure of the speed and direction of an object. It is a vector quantity and is often represented by an arrow that indicates the direction of motion and the magnitude of the speed.(速度是物体的速度和方向的度量。它是一个矢量量,通常用箭头表示运动方向和速度大小。)
解释:Velocity is calculated as the distance traveled by an object divided by the time it takes to travel that distance. It is a scalar quantity if only the magnitude of the speed is considered, but it is a vector quantity if the direction of motion is also taken into account.
近义词:Speed, rate, pace.
反义词:Slowness, deceleration, retardation.
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