gravel bed

基本解釋

• 礫石層

英漢例句

雙語(yǔ)例句

• Whenever they heard his tires crunch on the gravel driveway they would scramble to hide under their beds.
  只要一聽到他的輪胎碾過(guò)車道上的碎石路他們就會(huì)趕緊爬到他們的床下躲起來(lái)。
• The cool, clear waters with loose gravel beds hold some 2, 000 bull trout nests, among the highest concentration in the world.
  涼爽清澈的河水，還有松散的碎石河床擁有2000外歐鱒巢穴，是世界上歐鱒巢穴最密集的地方。
• The tools were located in a series of gravel, sand, and mudstone beds and included picklike tools, basic hand axes, and broken pieces of stone left behind in the tool-making process.
  這些工具遺跡位于一系列的礫石、沙灘和泥巖床上，包括類似鎬的工具、基本手持工具和在工具制造過(guò)程中殘留的碎石片等。

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詞組短語(yǔ)

短語(yǔ)

• coastal gravel beds 海岸礫石層

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專業(yè)釋義

地球科學(xué)

• 礫石層

  After the survey of gravel beds,we know the area and the age of the two gravel beds,the ingredient,granularity,orientation of the gravels.
  通過(guò)對(duì)礫石層的調(diào)查,了解其分布的范圍、分析了礫石的成分、粒度、礫向、形成年代。