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- Photosynthetically active radiation (PAR) had no significant directly influence to the Pn, but through other factors affect Pn indirectly. 光合有效辐射对青冈栎光合速率直接影响不显著，而主要是通过其它因子间接影响光合速率。
- Wavelength-selective or photoselective mulches absorb photosynthetically active radiation （PAR） and transmit solar infrared radiation. 波长选择性或光选择性塑膜吸收光合活性辐射并传递太阳红外辐射。
- The results showed that the percentage of photosynthetically active radiation (PAR) was about 80.1 in the absorption spectrum. 结果表明，冠层上方总辐射、反射辐射、基部透射辐射及吸收辐射中光合有效辐射所占百分比分别为47.;5%25、25
- The frequency of fog occurrence has been as high as 40% of annual time and has reduced ca. 70% of the accumulated photosynthetically active radiation. 此区域一年有平均约40%25以上的时间受云雾笼罩，雾发生时林冠上光量平均降低约88%25，以年平均而言，林上光量因云雾之发生衰减约70%25。
- Fill your radiator with water, or your engine will overheat. 给你的散热器充水，否则引擎会过热。
- For modelling of three dimensional distribution of Photosynthetically Active Radiation (PAR) in crop canopy, the important contents of this thesis are as following. 本文的主要研究目的是建立玉米冠层内光合有效辐射(Photosynthetically Active Radiation, PAR)三维空间分布的模拟模型。
- The radiator is giving out a lot of heat. 散热器释放出很多热量。
- The transmittance of solar total radiation and the transmittance of photosynthetically active radiation (PAR) in a gable-type, single PVC covered greenhouse were studied. 摘要在此研究中量测山型屋顶单层PVC塑胶布温室全日照量与光合成有效辐射量(PAR)之透过率物性。
- Single leaves nearly absorbed all of the ultraviolet radiation(UV) and 71.8%of photosynthetically active radiation,but transmitted 9.6%and reflected 18.6%. 对光合有效辐射的吸收也很大（71.;8%25），透射很小（9
- Shall I put some anti- freeze in the radiator? 要不要在散热器里注入一些防冻剂？
- Sit by the radiator and get warm. 坐在暖气旁边，暖和暖和。
- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- Tom was cold so he huddled up against the radiator. 汤姆感到冷，所以他挨著散热器把身子缩成一团。
- The dog nestled up against the warm radiator. 狗倚著暖烘烘的散热器。
- This car has a fan-cooled radiator. 这部汽车有一个由风扇散热的冷却器。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Analytic results show that stomatal conductivity (cond) , intercellular CO_2 concentration(Ci) and photosynthetic active radiation(PAR) are main influencing factors of net photosynthetic rate in Carya illinoensis K. 影响浙江山核桃日变化的主要因子是蒸腾速率、气孔导度、胞间CO_2浓度、光合有效辐射以及气温； 影响湖南山核桃日变化的主要因子是气孔导度、胞间CO_2浓度以及光合有效辐射。
- The concepts of solar radiation, photosynthetically active radiation (PAR) and ultraviolet radiation are given in Chapter 1. The purposes and structures of this research are also included in this chapter. 第一章介绍了太阳辐射、光合有效辐射、紫外辐射等方面的一些基本概念,简要说明了本文的研究目的与研究内容。
- Where's the key for turning off the radiator? 关散热器的开关在哪里?
