但先前技术有时难以捉摸。
Novelty means a intellectual product is not a prior art.
新颖性是指一项技术知识未成为在先技术。
Uniform polishing is difficultly implemented in the prior art;
现有技术较难实现均匀抛光；
The prior art leads to single function and inconvenient carrying.
现有技术功能单一且不便搬运。
The fifth chapter is the comparative analysis on the prior art counterplead.
第五部分是对公知技术抗辩的比较分析。
Compared with prior art, this invention improves the catalyst activity obviously.
与现有方法相比，由本发明方法提供的催化剂的活性明显提高。
Second, comparing the principle of the prior art and other correlative principles.
第二部分是公知技术抗辩原则与其他相关原则的比较。
The utility model solves the disadvantages of prior art complicated structure and high cost.
它解决了现有技术结构复杂，成本较高的缺点。
艺术优先于科学。
艺术优先于科学。
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