The results showed that there were significant difference in increased biomass yield , increased new shoots , n uptake efficiency , n physiological utilization efficiency , n economic efficiency and n use efficiency among 6 tea plant genotypes 结果表明，在4种施氮条件下，生物量增加值、新梢生长量、氮素吸收效率、氮素生理利用效率、氮素经济效率和总的氮素效率存在著显著的品种间差异。
Owing to the limitation of the ray method in analyzing the field distribution and transmit power of optical waves in fibers we decide to apply waveguide theory for analyzing dcf with truncated inner cladding in an at tempt to find out the divergences of different types of dcf with truncated inner cladding in absorption efficiency in unit distance 由于射线法在分析光波在光纤中的场分布、传播功率等情况时有其局限性，因此，文章改用波动理论对缺陷型内包层双包层光纤进行分析，试图找出不同类型的缺陷型内包层双包层光纤单位距离内吸收效率的差异。
To investigate the practicability of a solar - direct - pumped fiber laser by using a parabolic dish concentrator , the solar power absorbed by the fiber laser and its absorption efficiency were calculated with numerical method based on the characteristics of solar spectrum in outer space 摘要为了研究抛物面碟形聚光器实现太阳能直接抽运光纤激光器，根据空间太阳光谱分布特点，采用数值方法，计算了用该聚光器聚集太阳能量抽运双包层光纤激光器时光纤吸收的太阳能量及其吸收效率。
