直接焊接到压力保持部件上的外部配件及容器支架的材料应与压力部件相同。
Materials for external attachments and vessel support welded directly to the pressure retaining parts shall be similar material as the pressure parts.
研究表明：放顶煤开采、提高支架工作阻力可以减缓煤壁压力，煤体合理注水可以提高煤体黏聚力与抗剪强度，它们是防治极软煤层煤壁片帮的有效措施。
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
不同热压时间、温度、压力对支架孔隙率及抗压强度的影响。
Influence of hot-pressing time, temperature and pressure on the porosity and compressive strength of the scaffold.
应用推荐