贝壳的一种

The nacre of molluscan shell, which is composed of inorganic aragonite tablets and a few percent of organic polymers filling between the tablets, is a wonderful natural composite material.

软体动物的贝壳珍珠质是由文石板片(CaCO_3晶体)以及少量填充在板片之间的有机质组成的一种天然的复合材料，具有复杂的形貌以及良好的力学性能、光学性能，其文石板片与有机基质交替叠层排列的微结构以及文石晶体的结晶学取向是珍珠层具有优异的力学性能的重要原因之一。

The nacre of molluscan shell, which is composed of inorganic aragonite tablets and a few percent of organic polymers filling between the tablets, is a wonderful natural composite material. It shows complex forms, and fascinating mechanical and optical properties.

软体动物的贝壳珍珠质是由文石板片(CaCO_3晶体)以及少量填充在板片之间的有机质组成的一种天然的复合材料，具有复杂的形貌以及良好的力学性能、光学性能，其文石板片与有机基质交替叠层排列的微结构以及文石晶体的结晶学取向是珍珠层具有优异的力学性能的重要原因之一。

The idea of designing intermetallics based laminated composites is derived from the microstructure of nacre in the nature.

金属间化合物基叠层复合材料是受自然界中贝壳结构的启发而设计的一种新型高温结构材料。

One of the earliest forms of money, borrowed from the Indians, was wampum, black and white polished beads made from clam shells.

最早的一种货币形式是借用印第安人的贝壳串珠，一种蚌壳磨成的黑白珠子。

In the American colonies one of the earliest forms of money, borrowed from the Indians, was wampum , black and white polished beads made from clam shells.

美洲殖民地最早的一种货币形式是借用印第安人的贝壳数珠，一种蚌壳磨成的黑白珠子。

Any of several coniferous evergreen trees of the genus Agathis,especially A.australis of New Zealand,having broad leathery leaves.

贝壳杉一种贝壳杉属的针叶常绿树，尤指产于新西兰的新西兰贝壳杉，具有宽大的似皮革的叶子

Of these, the ammonites are very interesting and important.

紧接着提到的ammonites是&这些贝壳类动物&的一种。

The microstructure of a mactra sulcataria shell was observed by scanning electronic microscope.

使用扫描电镜观察蛤蜊贝壳的微结构，结果显示蛤蜊贝壳是一种由无机文石和有机胶原蛋白组成的层状生物陶瓷复合材料。

Island in a group of people on the island apart from a few samples do not yield anything other than the production of the necessities of life can not be the island's residents in a shell called the RMB, as the money to spend, that is, a 3 coconut shells, fresh water a drum shells, etc.

在一个岛上有一群人，岛上除了几样产量不大的生活必需品以外什么也生产不了，岛上的居民用一种叫RMB的贝壳，作为钱来花，就是椰子一个3贝壳，淡水一桶5贝壳等等。

Contents of Zn, Cu, Cd and Pb in Shell of oyster and offshore water from Dalian gulf, Laohu beach, Fujia Zhuang beach, Lingshui bay, Lvshun and Jinzhou are studied by Anodic Stripping Voltammetry in order to establish a relationship between offshore seawater and heavy metal content in shells. Through monitoring the seawater and shells we researched whether the shells could replace the soft tissue of oyster shells as an indicator of marine environment changes in hope of finding a more convenient and accurate carrier for monitoring marine heavy metal.

本论文以大连湾、老虎滩、付家庄、凌水湾、旅顺及金州六个区域的近岸海水及牡蛎贝壳为研究对象，应用阳极溶出伏安法对其锌、镉、铅、铜的含量进行分析，旨在通过监测大连近海水域及贝壳重金属含量来研究二者的相关性，探索是否可以利用贝壳替代贝类软组织来指示海域环境的变化情况，从而找到一种更为简便、更为可靠的监测海洋重金属的载体。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。