Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/0023f472057538f02ef59bd03c21fb3c.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 weathered pebble例句_weathered pebble英汉例句_weathered pebble双解例句_食材鋪反向词典
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。