Different concentrations of two extracts did not clag the growth of six epiphytes and three bacteria tested . the further study on other plant pathogenic microorganism needs to be done 在本文的实验条件下，瑞香狼毒叶石油醚和乙醇提取物不同浓度对受试的6种真菌和3种细菌均没有抑制作用。
2.
Apply the ergonomic theroy , adopts advanced high - tech moulding technique , design an even , soft , actual support for neck when sitting , help head & neck reach the most natural and relaxing state when sleeping . it does not clag bood circulation , especially it suits long - distance bus traveling and air traveling 慢回弹骨头枕利用人体工程学原理,真正采用先进的高科技模塑技术，设计出人在坐姿的情况下给予头颈最平均、柔和及真实的支撑，可提供人体头部、颈部睡眠时的自然舒展状态，不阻碍血液循环。
3.
Along with the deeper study on the reliability testing and testing equipments , varieties of testing methods and fail data emerge as the times require , naturally the former analytic method would probably not satisfy us when the condition changes . the inapposite statistical arithmetic would clag the development of reliability technology undoubtedly 在电器可靠性技术领域，随着对电器产品可靠性试验及其装置深入的研究，各种不同的试验方法及不同类型的失效数据应运而生，继续沿用以往的失效数据分析方法将可能不会得出令人满意的结果，因此能否寻找出适合的数理统计方法将是制约可靠性研究的一个瓶颈。
