安全帽不能以任何方式进行修改，如钻孔并且进行定期检查以确定是否有明显的裂纹，缺陷和有效期。
Hard hats shall not be modified in any way, such as drilling and shall be regular inspected for visible cracks, defects and expiration date.
长期以来路基工程质量检测与评价方法是采用传统开挖检查和钻孔取样试验的常规技术。
For a long time, the subgrade project quality testing and evaluation method follows the traditional excavation inspection and drilling and sampling test techniques.
为了评价帷幕灌浆效果，将数字钻孔摄像技术应用到小浪底水利枢纽3号灌浆洞3个灌浆质量检查孔中。
In order to appraise the quality testing of grout curtain, digital borehole camera technology is applied to three boreholes of the grouting gallery no. 3 in Xiaolangdi Water Control Project.
应用推荐