袖章
发表于 2025-3-28 17:02:53
http://reply.papertrans.cn/87/8659/865836/865836_41.png
骇人
发表于 2025-3-28 21:19:16
http://reply.papertrans.cn/87/8659/865836/865836_42.png
逢迎春日
发表于 2025-3-29 02:18:20
Photovoltaic Water Pumping — A 1986 Updateght years of practical experience. It is concluded that technical problems have been largely overcome, although because photovoltaic pumps are not yet in widespread use, there is a need for improved routine system selection and provision of maintenance back-up. Photovoltaic pump costs are currently
cloture
发表于 2025-3-29 03:43:22
Telecommunication and Professional Uses of Photovoltaics since 1980. Taking into account in addition 8383 systems operated by other companies and by private owners, it can be stated that PV-systems are reliable power sources. In the case of extensive telecommunications projects in rural areas, problems are both organizative and technical. Technical probl
synchronous
发表于 2025-3-29 09:15:14
Present Situation of Photovoltaic Applications In Chinacountryside. Today power shortage is still one of the most serious problems in China, especially in the rural area. AC power is not available at about 35% of villages or at 80,000,000 families in rural area. In such area, farmers and herdsmen are still using kerosine lights. They couldn’t pump water
Carcinoma
发表于 2025-3-29 14:07:22
Progress in International Photovoltaic Standardse of eight documents covering various aspects of performance measurement have been cleared for publication and a further four are in the final stages of acceptance. Drafts of tests for the design qualification of modules have been prepared and six of these are ready for circulation to National Commi
mediocrity
发表于 2025-3-29 16:25:36
http://reply.papertrans.cn/87/8659/865836/865836_47.png
装勇敢地做
发表于 2025-3-29 20:32:34
http://reply.papertrans.cn/87/8659/865836/865836_48.png
高贵领导
发表于 2025-3-30 02:43:40
http://reply.papertrans.cn/87/8659/865836/865836_49.png
calorie
发表于 2025-3-30 04:08:52
The Calibration of Primary Terrestrial Flat-Plate Reference Devices — A Proposed International Standis concluded that an outdoor method in clear, sunny weather, using the diffuse as well as the direct radiation, is most likely to gain general acceptance as an international standard. Such a procedure is proposed for further study.