standard fiber glass

例句：

1. 1.The standard for measuring the length of a ruler is 20 cm.
   测量尺的标准长度是20厘米。
2. 2. The company's new product line follows industry standards.
   该公司的新产品线遵循行业标准。
3. 3. The standard operating procedures are essential to ensure quality control.
   标准操作程序对于保证质量控制至关重要。