1. 馬達的特性曲線圖由四條性能線組成: N=f (T) (轉速-扭力線)，I=f (T)( 電流-扭力線)，P=f (T) (輸出功率-扭力線)，η=f (T) (效率-扭力曲線)。

2. 圖中的No代表空載轉速(r/min)，是指電機在額定電壓下，沒有加任何負載時的每分鐘轉動圈數。

3. 圖中的Io代表空載電流(A)，是指電機在額定的電壓下，沒有加任何負載時的電流值。

4. 圖中的Ts代表堵轉力矩(g.cm)，是指電機有額定電壓下，使電機停止的轉動力矩。

5. 圖中的Is代表堵轉電流(A)，是指電機在額定電壓下，當外加負載使電機停止轉動時的電流值。

6. 圖中的P代表電機的輸出功率(W)。

7. 圖中的Pmax代表電機的最大輸出功率。

8. 圖中的η代表電機的工作效率(%)， 是指電機的輸出功率/輸入功率X100%。

9. 圖中的ηmax代表電機的最大效率。

1. The characteristic Curve of the motor is made up of four performance lines: N=f(T) (rotational speed- torsion  line), l=f(T) (electric current- torsion line), 

P=f(T) (output power - torsion curve), η =f(T) (efficiency- torsion curve).

2. No in the chart represents the unloaded rotational speed (r/min), which refers to the number of times the motor rotateevery minute under specified voltage without any load.

3. lo in the chart represents unloaded electric current (A) ,which refers to the electric current value of the motor underspecified voltage without any load.

4. Ts in the chart represents standstill torsion (g.cm) which refers to the torsion which stops the motor rotating underspecified voltage.

5. Is in the chart represents standstill electric current (A) which refers to the electric current value when the torsion stops the motor rotating under specified voltage.

6. P in the chart represents output power of the motor(W).

7. Pmax in the chart represents the maximum output power the motor.

8. η in the chart represents the working efficiency of the motor (%) which refers to the output power /input power x 100% .

9. ηmax in the chart represents the maximum efficiency of the motor.