Make sure that the dc ammeter indication increases approximately 5 amperes.
确保直流电流表指示升高大约5安培。
Make sure that the dc ammeter indication decreases approximately 5 amperes (returns to its original value).
确保直流电流表指示降低大约5安培(回到初始值)。
Make sure that the dc ammeter indication decreases approximately 5 amperes (returns to its original value).
确保直流电流表指示降低大约5安培(回到初始值)。
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