论文部分内容阅读
天津海雅职业培训学校做了一个关于水的有趣实验:称重水的重量。他们先是取来一立方日常生活用水,重为一吨;后取来一立方“海雅山泉”——来自天津蓟县黄崖关的山泉水,重为九百公斤。也就是说,山泉水的重量略轻于日常饮用水。与此同时,参与实验者又做了另一项实验,用大口喝水来鉴别水质,结果是普通饮用水入咽时略显生涩,而海雅山泉则柔软顺滑,一路畅通。以水的重量、口感来甄别水的优劣早在古代即已有之,其中清朝乾隆
Tianjin Haiya Vocational Training School made an interesting experiment on water: weighing the weight of water. They first take a cubic daily water, weighing one tonne; after taking a cubic “Haiya Spring ” - from the spring of Yali, Yajachang, Tianjin, spring, weighing 900 kilograms. In other words, the spring water slightly lighter than the daily drinking water. At the same time, the experimenter did another experiment, using large mouth to identify the water quality, the result is ordinary drinking water into the pharynx slightly jerky, and Haiya Springs are soft and smooth, all the way to smooth. The weight of water, taste to distinguish the pros and cons of water as early as ancient times that have been, of which the Qing Emperor Qianlong