The components to be considered in this book include boulders, gravel, sand, silt and clay.
本书所考虑的组成部分包括漂砾，砾石，砂，粉土和粘土。
The top of the flow were armoured with boulders.
泥石流的顶部布满了漂砾。
The snout and the top of the flow behind the snout, typically were armoured with boulders.
泥石流的鼻部及鼻后的顶部都布满了漂砾。
A rock consisting of pebbles and gravel embedded in cement.
砾岩由水泥固结的卵石和砾石形成的砾岩
Effects of Gravel on Water Retention Capability of Purple Gravelly Soils in a Hilly Area
砾石对丘陵紫色砾质土持水性的影响
Study on Water Retention Capability of Purple Rock Fragment Soils in Hills
丘陵紫色砾质土/砾石土持水性研究
Gravel is an unconsolidated mixture of rock fragments or pebbles.
砂砾是砾石岩石碎片或卵石的松散的混合物。
unstratified soil deposited by a glacier; consists of sand and clay and gravel and boulders mixed together.
冰河沉淀形成的不分层的土壤，由沙、粘土、砂砾和漂石混合而成。
Some investigators maintain that large boulders must be supported by turbulence within a viscous debris flow.
有些调查者认为大漂砾是通过粘性泥石流中的涡流搬运的。
formation-to-gravel size ratio
地层砂与砾石粒度比
gravel fluid mixture
砾石与液体的混合物
gravel-slot combination
砾石与割缝的尺寸组合
rathole gravel slurry
井底口袋内的砾石砂浆
surface gravel pack
地面倾倒式砾石充填
GP shear-out safety joint
砾石充填剪切安全接头
offshore gravel packing operation
海洋油井砾石充填作业
down-ward progression of gravel
砾石逐渐向下充填推进
nondamaging gravel packing fluid
不污染的砾石充填液