论文部分内容阅读
江苏省常熟市玻璃钢厂在省计量局的关怀下,在同济大学、华东电力设计院的支持帮助下,于最近研制成功了BS型、BT型水准和地形测量的两种玻璃钢标尺。这两种标尺经多年
With the support of Tongji University and East China Electric Power Design Institute, the glass steel mills of Changshu City, Jiangsu Province, under the care of the Bureau of Metrology, recently successfully developed two types of glass fiber reinforced plastic rods of BS type, BT type and topographic survey. These two scales after many years