access tube meaning in Chinese
检查管
进人井
人行通道管
Examples
- Standard test method for logging in situ moisture content and density of soil and rock by the nuclear method in horizontal , slanted , and vertical access tubes
在水平倾斜和垂直通道管中用原子核法对渗出土壤和岩石的潮气含量和密度测定的标准试验方法