1.
A soft, porous limestone, composed essentially of fragments of shells and coral, used as a building material.
贝壳灰岩一种质软、多孔的灰岩，基本上由贝壳及珊瑚的碎片构成，用作建筑材料
2.
caprinid biosparite
双壳类生物亮晶灰岩
3.
Petworth marble
彩色的含有贝壳形迹的石灰石
4.
The types of reservoirs main include base rock weathering crust, sandstone, tuffaceous sandstone and conglomerate.
储层类型主要包括基岩风化壳、岩、灰质砂岩和砾岩。
5.
Deposition of Plate-Like Apatite on Nacre Surfaces and Its in Vitro Bioactivity
贝壳表面沉积片状磷灰石及其体外生物活性
6.
Preparation of Hydroxyapatite(HAp)-Shell Sand De? uorinating Agent by Process of Metasomatic Crystallization
交代结晶法制备羟基磷灰石/贝壳砂除氟剂
7.
An opening in the earth's crust through which molten lava, ash, and gases are ejected.
火山地壳的开口，火中喷出熔岩、灰尘和气体
8.
The Liuhe area belongs to the Archaeozoic high -g rade metamorphic belt,the outcropping rocks are mainly gray gneisses,supracrusta l rocks are rarely.
溜河地区属太古宙高级变质区,出露岩石以灰色片麻岩为主,表壳岩稀少。
9.
Betty sells shells on the back of a red shell.
贝蒂在红色贝壳的背面上卖贝壳。
10.
White shell beads used as wampum.
白色贝壳串珠用作贝壳串珠的白色贝壳小珠
11.
shellfish with a hinged double shell,eg a mussel or clam
双壳贝类（如贻贝或蛤）
12.
How Does the Sound of the Ocean Get Inside a Seashell?
到贝壳里“听海”？
13.
A dark - gray to black, fine - textured igneous rock composed mainly of feldspar and pyroxene and used for monuments and as crushed stone.
辉绿岩一种贝岩，颜色深灰至黑，带有细微网纹，主要由长石和辉石构成，用作纪念碑或碎石块
14.
The shells she sells are seashells, I'm sure.
我确定她卖的贝壳是海贝壳。
15.
Having or forming a shell.
有贝壳的有或形成贝壳的
16.
Wampum was made of seashells.
贝壳串珠是用海贝壳制作的。
17.
A crumbly mixture of clays, calcium and magnesium carbonates, and remnants of shells, used as fertilizer for lime - deficient soils.
泥灰土一种由粘土、钙、镁碇酸盐和贝壳碎片构成的易碎混合物，用作缺乏碳酸钙土壤的肥料
18.
A mass of strong, silky filaments by which certain bivalve mollusks, such as mussels, attach themselves to rocks and other fixed surfaces.
足丝某些双壳软体动物（如贻贝）用于将自身附着在岩石上和其它固定表面上的一团柔韧的丝