发动机净外特性曲线；发动机与变矩器共同输出特性；发动机净外特性曲线；液力变矩器原始特性曲线；变矩比与变矩器传递效率；液力变矩器泵轮转矩系数；发动机与变矩器共同输入特性(The net engine characteristic curve of engine and torque converter; output characteristics; engine net characteristic curve; hydraulic torque converter original character curve; torque ratio and torque transmission efficiency; torque converter pump wheel torque coefficient of engine and torque converter; common input characteristics)