Since there are more things in the bud tissue of the male flower , such as phenolic compounds , polysacchrides , proteins and some other secondary metabolites , three methods used to isolate rna are tested in this assay , which are the enzyme digesting methods of ctab , ctab - dna and sds - dna 克服了常规方法和试剂盒无法提取出富含酚类化合物、多糖和一些尚无法确定的次级代谢产物的白桦花芽组织rna的障碍，提出了3种白桦雄花芽组织rna的提取方法： ctab 、 ctab - dna酶消化法和sds - dna酶消化法。
The complex influences of ethical morality which brought by researching and dealing with and development of network , the distinction and the relationship of the ethical morality of network and ethical morality of the reality brought by analysing , the dilemma and the development of the ethical morality of network brought by conferring , contribute to constitutes the valid and nip in the bud measures to ensure the healthy development in the way of network development 研究网络发展所带来的伦理道德方面的复杂性影响，分析网络伦理与现实伦理的区别与联系，探讨网络伦理的困境与建设，有利于制定有效的防范措施来保证网络建设的健康发展，且认为学校、家庭、社会分别肩负不同的责任，应共同承担起青少年道德建设的重任。
Tpm is the procedure that is based on management and maintenance of equipment , which improves the enterprise gradually . take tpm action , build the nip in the bud system , it will take an important part in reducing the costing , increasing the productivity , improving the management and enhancing the competition of enterprise Tpm是以设备的维护管理为切入点，通过所有员工积极参与的自主保全活动与点点滴滴不断改善的过程，为企业构筑防患于未然的机制，它对降低生产成本，提高生产效率，改善企业经营管理，增强企业竞争力起着重要作用。
During the long active service time , the structure maybe presents all kinds of structural damage because such reasons as tired accumulating , environment corroding and natural calamity function , etc . in order to find those damages early , nip in the bud , and lower the damage of accidents , it is great meaning full to research the technique of online damage monitoring of the long - span lattice roof structure 结构在服役期间,由于疲劳累积、环境腐蚀及自然灾害等作用,可能出现结构损坏,因此,为了能够及时发现问题,防患于未然,把事故损失降到最低点,在结构正常使用情况下,对大跨空间网格结构进行在线损伤监测研究,就显得极有现实意义。
Light composite wall structure is a new wall structure adapt to the need of wall refom , this program is a c orrespondering structure c alculation program in order to propel the light composite wall development , the study of this stucture is in the bud in the circles of the structure engineering , therefore it will propel the civil engineering forward , having the widely theorytical and applied prospect Lc复合墙结构是为适应墙体改革的发展而开发的一种新型墙体结构，本论文中程序是为促进lc复合墙结构的推广应用而开发的一个配套程序。 lc复合墙的发展在国内建筑业尚处于起步阶段，因此研究lc复合墙结构设计理论及计算机程序将对建筑业的发展，具有极其广泛的理论和工程实际意义。
