The systematic testing of components or equipment during manufacturing makes this non-destructive condition mandatory when testing a sample.
在元器件或设备生产过程中的系统化测试，测试样品时对样品不产生破坏是强制性条件。
It may however be the symptom of an underlying pathological condition; and it is therefore mandatory to diagnose properly its origin in order to propose an adequate treatment.
但也可能为某种潜在病理状态的症状而需要明确病因以便指导恰当的治疗。
It may however be the symptom of an underlying pathological condition; and it is therefore mandatory to diagnose properly its origin in order to propose an adequate treatment.
但也可能为某种潜在病理状态的症状而需要明确病因以便指导恰当的治疗。
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