大家都知道,各种建筑材料都有一定的计量单位,例如红砖用块来计数,水泥用吨来计量。对于散状的大宗材料,用什么单位计量是一个值得商讨的问题。比如黄砂,71年前我市建筑预算中是以立方米来计算的,而71年后改用吨来计量,前者按体积,后者是按重量。究竟哪一种方法恰当,这要看用那一种方法更方便和准确。 As we all know, all kinds of building materials have a certain unit of measurement. For example, red bricks are counted in blocks, and cement is measured in tons. For bulk bulk materials, what unit is used is a question worth discussing. For example, yellow sand, 71 years ago, the city’s building budget was calculated in cubic meters, and after 71 years it was measured in tons. The former was measured by volume, and the latter by weight. Which method is appropriate depends on which method is more convenient and accurate.