N leader 领袖
Being in the wild re-duces stress; spending time with a pet enhances the lives of everyone from autistic children to Alzheimer's patients.
身处荒郊野外可减轻压力，与宠物共度时光可改善每个人的生活，从患自闭症的儿童到患老年痴呆症的病人。
Causes of ineffectiveness of plastics extruder screw due to cracking are analysed, briefly intro - duces renovation by welding.
对塑料挤出机螺杆失效断裂原因进行分析，简要介绍了焊接修复情况。
Around questions facing traditional network, it intro-duces traits of next generation network (NGN) and value-added ser-vices provided by NGN.
针对传统网络面临的问题，介绍下一代网络(NGN)的特点，以及提供的增值业务。
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