According to practical situation in project, causes of early cracks are analyzed, and its technical prevention measures are proposed to control cracks and ensure project quality.

结合工程实际中遇到的情况，对早期裂缝的成因进行了分析探讨，介绍了防止早期裂缝的技术措施，从而控制裂缝发生，确保建筑工程质量。

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The prevention and control measures of water environmental pollution were discussed, including the technical and law regulatory measures and so on.

探讨了我国水环境污染的防治措施，包括技术防治措施和法律规范对策等。

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Some technical measures of poisonous prevention and control are introduced briefly at this paper.

简要介绍了几种毒物防治的技术措施。

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