Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/0fac50374c88018b8066ed4a93418d50.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 weathered pebble例句_weathered pebble英汉例句_weathered pebble双解例句_果味酸柯林斯词典
For the frozen weathered bedrock, sandy gravel and pebble bed, it is more suitable to use drilling and blasting method than to use the frozen soil excavator. 對凍結風化基巖、砂礫層或卵石層，凍土挖掘機傚率低，宜採用鑽眼爆破法，採用抓巖機裝載凍土。