正交设计可提高试验效率及准确性，是愈伤组织诱导培养基、分化培养基筛选优化的好方法；

Orthogonal design improved experimental efficiency and precision, which was a good way for selection and optimization of callus induction medium and differentiation medium.

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针对现有航天继电器可靠性筛选试验方法中存在的问题，提出了一种航天继电器寿命预测方法。

A life forecasting method for aerospace relay was presented here according to the problem existed in the reliability screening test method for aerospace relay.

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通过大田产量试验验证，本筛选方法的可靠性可达76.9%。

The field test showed that the reliability of this method could reach 76.9%.

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