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。

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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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Of course one can imagine a situation where the firm and a majority of workers do wish to form the union and would voluntarily negotiate a contract which makes dues a mandatory condition of employment.

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So the idea is you combine a rule that eliminates preexisting condition exclusions with mandatory health insurance, just like auto insurance is mandatory.

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The second condition commits Verizon to mandatory data roaming agreements with other mobile providers who want to use the newly-acquired spectrum.

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