They also looked at pictures of a leaf, shell, or rock.
他们也观看树叶，贝壳或石头的图片。
When they have reached the size they want, they use an implement such as a rock or shell to smooth the surface of the pot.
参考译文：做出想要的尺寸时，他们用一个工具，比如一块石头或贝壳，将罐子的表面弄平滑。
In one experiment 3-year olds looked at pictures of a fork, teddy bear, truck, and other human-made objects. They also looked at pictures of a leaf, shell, or rock.
在一项实验中，让一些三岁的孩子去看叉子、泰迪熊、卡车和其他一些人造的东西的图片，也让他们看树叶、贝壳和石头的图片。
Plate movements are the surface expressions of motions in the mantle—the thick shell of rock that lies between Earth's crust and its metallic core.
板块运动是地幔运动的表面现象。地幔是位于地壳和金属内核之间的一层厚厚的岩石壳。
Larger ones, such as BP, Chevron and Shell, are setting up their own digital-rock-physics laboratories.
而大型石油公司—如BP、雪佛龙和壳牌正在创建自己的数字岩石物理实验室。
The space between the rock walls and the steel tank was narrowed and filled with concrete so that all the stresses would be absorbed by the concrete and rock as opposed to the steel tank shell.
钢罐和岩洞壁间的距离很小并灌注混凝土，这样钢罐壁不承受任何应力而由岩石和混凝土承受。
The reinforced shell structure was a new kind of supporting forms in the soft rock tunnel supporting engineering.
钢筋网壳结构是软岩巷道支护工程中一种新型的支护形式。
The reinforced shell structure is a new kind of forms in the supporting engineering for soft rock tunnel.
钢筋网壳结构是软岩巷道支护工程中一种新型的支护形式。
This paper analyzes the surrounding rock characteristics of single shell lining only from the mechanical mechanism aspects using the discrete element software of UDEC.
本文仅从力学方面用离散元软件udec分析了洞室围岩的单层衬砌支护特性。
A type of secondary porosity created through the dissolution of a preexisting constituent of a rock, such as a shell, rock fragment or grain.
一种通过先存岩石组分(如生物介壳，岩屑或岩石颗粒)的溶解所造成的次生孔隙类型。
A type of secondary porosity created through the dissolution of a preexisting constituent of a rock, such as a shell, rock fragment or grain.
一种通过先存岩石组分(如生物介壳，岩屑或岩石颗粒)的溶解所造成的次生孔隙类型。
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