常見例句雙語例句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，凍土挖掘機效率低，宜采用鉆眼爆破法，采用抓巖機裝載凍土。 返回 weathered pebble