When orienting specimens, provide support over the entire length of the major axis without sagging, making sure the supporting device does not retard the spread of flame materially.
英
美
- 确定样品的方向后;沿主轴方向支撑好样品而不能使样品下弯;并确保支撑设备不影响燃烧物料火焰的扩散.