
傳導速度
EMG showed a delayed nerve conduction velocity.
肌電圖示周圍神經傳導速度減慢。
Sensory and motor nerve conduction velocity reduced.
感覺及運動神經傳導速度變慢;
The parameters used included motor conduction velocity (MCV);
運動神經傳導速度(MCV);
Conclusion: Conduction velocity is a sensitive parameter in intraoperative monitoring.
結論:傳導速度是較敏感的術中監測參數。
Detecting record of nerve conduction velocity was the standard of objective evaluation.
客觀評估标準為神經傳導速度檢測記錄。
"Conduction velocity"(傳導速度)是一個跨學科的術語,主要應用于生理學和物理學領域,其具體含義需結合上下文理解:
神經科學領域
指神經纖維傳導電信號(動作電位)的速度,單位為米/秒(m/s)。例如,人體有髓鞘的Aα類神經纖維傳導速度可達80-120 m/s,而無髓鞘的C類纖維僅0.5-2 m/s。髓鞘化程度和軸突直徑是主要影響因素,髓鞘通過跳躍式傳導(saltatory conduction)顯著提升速度。
心髒電生理領域
特指心髒電信號在心肌組織中的傳播速度,正常心髒的房室結傳導速度約為0.05 m/s,而浦肯野纖維可達4 m/s。傳導速度異常會導緻心律失常,如房室傳導阻滞時速度下降,可能引發心跳過緩。
物理學領域
泛指熱量或電流在介質中的傳遞速率。例如銅的導熱系數約401 W/(m·K),而熱傳導速度與材料的熱容、密度相關;電導體的電流傳導速度接近光速(約3×10⁸ m/s),但電子實際漂移速度僅毫米級每秒。
該參數在醫學診斷中有重要應用,如神經傳導速度檢測可診斷周圍神經病變(糖尿病神經病變、吉蘭-巴雷綜合征),心電圖(ECG)則通過分析心髒傳導速度異常判斷心肌梗死或傳導系統疾病。
conduction(傳導)
例句:Heat conduction occurs when heat moves from a warmer object to a cooler one through a medium, such as metal or air.(當熱量通過介質(如金屬或空氣)從一個較熱物體傳遞到較冷的物體時,熱傳導就會發生。)
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.(傳導是指在無任何明顯物質運動的情況下,熱、電、聲音或其他形式的能量通過物質或物質本身傳遞的過程。)
解釋: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.
近義詞:Transmission, transfer, propagation.
反義詞:Insulation, retention, reflection.
velocity(速度)
例句:The velocity of the car was measured using a radar gun.(使用雷達槍測量了汽車的速度。)
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.(速度是物體的速度和方向的度量。它是一個矢量量,通常用箭頭表示運動方向和速度大小。)
解釋: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.
近義詞:Speed, rate, pace.
反義詞:Slowness, deceleration, retardation.
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