英语词汇gravel layer怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

短语

1
C. Vibration strike: it is used in drilling and casing with loosen sand, cobble stone and gravel layer etc.
振动击打：用于松散的砂、卵石、碎石地层的钻进及下套管等。
2
There have three decisive questions need to solve while drilling in sand gravel layer. The first question is drilling footage.
在砂卵石地层中勘察钻探时，要解决三个关键性的问题：一是钻进进尺问题；
3
The invert siphon project in Zhongyishui lies in the sand and gravel layer, with rich groundwater and high seepage coefficient.
中易水倒虹吸工程建筑物所处地层为砂卵层，地下水丰富，渗透系数大。

单词	gravel layer
释义	gravel layer 简明释义砾石层：地下或地表的一层由砾石组成的地层，通常用于建筑、道路建设或过滤水源。网络释义 1 ?砾石层砾石层短语 1 graded gravel layer 承托层 2 sand-gravel layer 砂砾石层 3 sand gravel layer 砂卵石地层双语例句 1 C. Vibration strike: it is used in drilling and casing with loosen sand, cobble stone and gravel layer etc. 振动击打：用于松散的砂、卵石、碎石地层的钻进及下套管等。 2 There have three decisive questions need to solve while drilling in sand gravel layer. The first question is drilling footage. 在砂卵石地层中勘察钻探时，要解决三个关键性的问题：一是钻进进尺问题； 3 The invert siphon project in Zhongyishui lies in the sand and gravel layer, with rich groundwater and high seepage coefficient. 中易水倒虹吸工程建筑物所处地层为砂卵层，地下水丰富，渗透系数大。
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