root radius of weld

例句：

1. 1.The welding process requires precise control over the root radius to ensure a strong joint.
   焊接过程需要精确控制根部半径，以确保接头牢固。
2. 2. The engineer measured the root radius of the pipe and calculated the necessary amount of filler material.
   工程师测量了管道的根部半径，并计算了所需的填充材料量。
3. 3. During the installation, it is important to ensure that the root radius is within the acceptable limits to avoid potential leaks.
   在安装过程中，确保根部半径在可接受的范围内以避免潜在的泄漏是非常重要的。