The over-current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. Frequency deviation caused by faulty operation is also prevented.
3
当合金设计出来后, 若加工工艺和热处理制度制定得不当, 也会降低合金设计的预期值。
The expected effects of alloy design may be deteriorated after the alloy is designed if the established operational regime is less appropriate to process technology and heat treatment.