001
000001932
003
LDTU
020
$a0960191402
041
$aeng
082
$a621.462
245
$aDC Motors Speed Controls Servo Systems $bAn Engineering Handbook
260
$aUnited Stastes of America $bElectro-Craft Corporation $c1980
300
$a128 p. $c23 cm
520
$aChapter 1: Terminology, symbols, systems of units; Chapter 2: DC motors and generators; Chapter 3: Unidirectional spees controls; Chapter 4: Applications; Chapter 5: Unidirectional speed controls; Chapter 6: Optical encoders.
650
$aElectric motors
653
$aElectric motors
852
$a7/25 Quang Trung $bNgoại văn
911
Trần Thị Hậu
927
Tặng
928
34794
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