Theories derive from practice as well as guide them, especially in the economic field. Therefore, the third method is substantial proof combining theories with practice.
理论来源于实践又必将指导实践，尤其在经济领域更是如此，因此，理论联系实践的实证分析法是本文的第三种研究方法。
In each case the court has held that the burden of proof is on the manufacturer once substantial evidence of a health hazard has been shown.
在各个案例中，法院一直持有这样的见解，一旦出示对健康危害的实质性证据，那么举证的责任就在制造商一方。
The burden of proof of evidence illegally obtained is the substantial and deep problem of the exclusion rule.
非法证据的证明责任是非法证据排除规则的关键性和深层次问题。
It features convenient installation, safe use, even heat transmission, waterproof, damp proof, long life and substantial price.
安装方便，使用安全，传热均匀，防水防潮，寿命长，价格低廉。
It features convenient installation, safe use, even heat transmission, waterproof, damp proof, long life and substantial price.
安装方便，使用安全，传热均匀，防水防潮，寿命长，价格低廉。
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