太阳灶５０问●郑效卿自７０年代中期以来，我国开展了太阳灶的研究推广工作。至９０年代中期，全国各省市的农村里，都有农户使用了太阳灶。尤其在甘肃省，使用太阳灶的农户达１０多万户。这些太阳灶在为农户提供炊事用能方面起到了很好的作用，深受广大群众的欢迎。编写... Solar cooker 50 Q ● Zheng Xiaoqing Since the mid-1970s, China has carried out research and promotion of solar cookers. By the mid-1990s, farmer households in all the provinces and cities in the country had used solar cookers. Especially in Gansu Province, more than 100,000 farmers use solar cookers. These solar cookers have played a very good role in providing farmers with cooking energy and are well received by the masses. write...