薇薇安
更新至25集
评分:
4.6
导演:
尤内斯库
类型:
纪录片
国家/地区:
荷兰
语言:
未知
发布日期:
2024-05-23 22:00:36
主演:
田明
尤金·哈茨
剧情:
The so-called wooden scale is a small weighing instrument with a wooden or metal pole with star points and tapers as the main body, and is equipped with a weight, a weight rope and a scale pan. According to the scope of use and the size of the scale, it is divided into three types: pan scale, pan scale and hook scale. A steelyard is a first-class arm lever, a simple weighing instrument that uses the principle of lever balance to weigh weight.