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9.1 Understanding and selection of commonly used low-voltage
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9.2 Three-phase cage asynchronous motor direct start control circuit
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9.3 Three phase asynchronous motor forward and reverse control circuit
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9.4 Three-phase cage asynchronous motor reduced voltage start control
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9.5 Star delta step-down starting circuit for three-phase cage asynchronous motor
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9.6 Three-phase cage asynchronous motor brake control circuit
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9.7 Electrical troubleshooting of lathes
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9.8 Maintenance of electrical faults in grinding machines
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9.9 Basic knowledge of PLC
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9.10 Three-phase cage asynchronous motor PLC unidirectional operation control system
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9.11 Direct Start Control Circuit for PLC Control of Three Phase Cage Asynchronous Motor
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9.12 Three-phase asynchronous motor star-delta PLC operation control system
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9.13 Three phase cage asynchronous motor PLC control star delta start control circuit
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9.14 Combination chandelier brightness control system
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9.15 Automatic door and code lock control system
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9.16 The PLC control system of the circular lantern
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9.17 Multi-motor manual automatic control system
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9.18 Drilling power head control system
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9.19 S7-200 analog control