贝壳类

Any of various marine gastropod mollusks, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusks.

海洋腹足动物海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

Any of various marine gastropod mollusks, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusks.

海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

Any of various marine gastropod mollusk s, chiefly of the genus Urosalpinx, that bore holes into the shells of bivalve mollusk s.

海洋腹足纲软体动物，主要指在双壳类软体动物的贝壳上钻孔的骨螺属。

The people had no agriculture but, over thousands of years, had developed techniques and equipm ent to exploit their environm ent, basing their econom y on fishing in stream s and coastal w aters that teem ed w ith salm on, halibut, and other varieties of fish; gathering abalone, m ussels, clam s, and other shellfish from the rocky coastline; hunting land and sea m am m als; and collecting w ild plant foods.

他们没有农业，但是经过几千年，已经发展了探索自身环境的技术和设备。他们是基于大量出现鲑鱼、大比目鱼和其他多种鱼类的自身流域和水岸捕鱼的经济；基于从落基山水岸聚集了鲍鱼、蚌类、蛤和其他贝壳动物的经济；基于捕猎地域和海洋哺乳动物的经济；以及基于收集野生植物的食物的经济； 10。

Therefore, RAPD markers was used to detect genetic diversity of twenty populations of eighteen species from ten genera in Chinese Unionidae, its phylogeny were studied employing the combined analyses of RAPD markers, rDNA ITS1 sequence analysis and shell morphometrics.

为此，本研究采用RAPD技术对我国10属18种蚌类20个群体的遗传多样性进行了分析，将RAPD标记与rDNAITSl序列分析、贝壳形态度量分析相结合对我国蚌科的系统发育进行了研究。

Look at the history of Chinese jewelry and cultural development, as early as the mid-Palaeolithic our ancestors on the use of animal teeth, shell, bone tubes, ostrich eggshell, stone beads and other ornaments to create strings, till ten thousand years before the turn of the new Paleolithic period, and further selection quartz, jasper, agate, obsidian and other semi-transparent colored material to create a variety of decorations, to the Xia Shang Zhou period, the Chinese men's and women's jewelry category was already very rich, and headgear are hairpin, comb, crown; ear decorated with rings; Necklace necklaces; hand-decorated with bracelets, Yuan and so on.

看看中国珠宝和文化发展的历史，早在中期旧石器时代我们对动物牙齿，贝壳，骨管，鸵鸟蛋壳，石珠等装饰品使用的祖先创造的字符串，直到万年前翻开新的旧石器时代，并进一步选择石英，碧玉，玛瑙，黑曜石等半透明彩色材料创建各种装饰，到夏商周时期，中国男子和女子的珠宝类产品已经非常丰富，帽的发夹，梳子，冠；耳装饰戒指，项链项链，手与手镯，元等装饰。

An international group of authors, representing a dozen countries, draw on diverse aspects of both fossil and living bivalves, including their form, functional morphology, morphogenesis, taphonomy, shell microstructure, cladistic relationships, biostratigraphic distributions, and molecular sequences.

一个作家的国际集团，代表十多个国家，借鉴和生活都双壳类化石，包括其形式，功能形态，形态，埋藏学，贝壳微结构，分支系统学的关系，地层分布的不同方面，分子序列。

Enormous shell middens can befound all over the world, wherever ancient migrants came acrosshandy oyster and mussel beds.

在全世界范围内，凡是在古代移民遇到大量唾手可得的牡蛎和蚌类动物的地方，巨大的贝壳堆都到处可见。

Enormous shell middens can be found all over the world, wherever ancient migrants came across handy oyster and mussel beds.

在全世界范围内，凡是在古代移民遇到大量唾手可得的牡蛎和蚌类动物的地方，巨大的贝壳堆都到处可见。

Most strong biological structures of this sort—bones, teeth, shells and so on—are highly mineralised.

大多数类似于骨骼，牙齿，贝壳等这类强韧的生物性结构都是高等的矿物质。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。