1·P2P Electronic Commerce greatly enhances the conveniency and flexibility of e-business, on the other hand that aggravates the risk and security threatening of business activity.
P2P电子商务比传统电子商务更方便、更灵活，但用户所涉及的风险和安全威胁也越大，各种网络诈骗层出不穷。
2·A new harddisk software lock designed by VB with API function. It is running safely and conveniency, with capability for restoring automatous, so it protects copyright validly.
利用API函数，用VB设计了一种新硬盘软件锁，其使用方便，运行可靠，有自动修复能力，可有效地保护版权。
3·A type of adjustable tuyere, which applied on the cupola, makes smelting operation more conveniency and rapid, smelting effect more elevated.
研制出一种可调风口，应用在双屑化铁炉和冲天炉上，能使熔炼操作方便快捷，提高熔炼效果。
4·By using the demo practice we think that practicality, conveniency and pertinency tool software is very important and can make development easily and operation effectively.
通过本案例开发实践，我们认为研发一套实用、方便、有针对性的工具软件十分重要。
5·Conclusion Nightguard vital tooth bleaching with TREE dental whitening gel is an effective, conveniency and safety therapy method and beneficial to periodontal tissue.
结论：TREE牙齿脱色凝胶用于活髓牙夜间漂白使用方便、安全、有效且对牙周组织有益。