bivalve

形容词：

形容词: bivalved

更多词形：

形容词: bivalved |

单词例句：

Any of several freshwater bivalve mollusks of the genera Anodonta and Unio,found in the central United States,that burrow in the sand or mud of lakes and streams.

淡水蚌，发现于美国中部的无齿贝属和珠蚌属几种淡水双壳软体动物的一种，在湖和河中的沙中或泥中挖洞。

A knoblike protuberance arising from a surface, as the prominence near the hinge of a bivalve shell or the projection at the scale tip of a seed - bearing cone.

圆形隆起在一个表面突起的圆形装饰物似的隆起，如在双壳贝类贝壳边缘附近的突起或在含种子的球果顶端的突起

Non-marine bivalve Ferganoconcha is widely distributed in the Lower and Middle Jurassic of Northern China, Central Asia, Siberia and Ural regions.

Ferganoconcha是广泛分布于我国北部、中亚、西伯利亚和乌拉尔地区下、中侏罗统的一类非海相双壳类。

Any of various bivalve mollusks of the family Cardiidae, having rounded or heart-shaped shells with radiating ribs.

鸟蛤鸟蛤科双壳类软体动物,有放射状翅脉的圆的或心形外壳。

Any of various minute, chiefly freshwater crustaceans of the subclass Ostracoda, having a bivalve carapace.

介形亚纲动物属介形亚纲的任一种体小的、主要生活于淡水中的甲壳纲动物，长有一对硬壳

Those animals boring into the rock include sponges, bivalve molluscs, and sipunculans.

居住在原有洞穴中的动物包括甲壳动物和沙蚕[9]。

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

There is a case of an oysterlike bivalve that evolved a more and more spiraled shell until, just before extinction, the valves could barely open.

这里有个例子，一种牡蛎状双壳类，进化出越来越趋螺旋状的外壳，直到该物种灭绝，其外壳已几乎不能打开。

This paper presents basic operating principle and application of bivalve value window comparison switch and three state comparison switch.

本文介绍了双阀值窗口比较开关及三态比较开关的基本工作原理及应用。