查询词典 mollusks

In freshwater habitats they eat primarily insects , and in saltwater they feed predominantly on crustaceans and mollusks .

在他们吃淡水生境主要害虫，在海水中，他们和饲料为主的甲壳动物和软体动物。

Researches on the strata and their sedimentary facies in the Sandy Desert Area of China since 150000aBP., fossil verteberates, mollusks and sporo-pollen, and the remains of fossil man activities and the analysis resultes of grain-sizes, detrital heavy minerals, clay minerals, chemical elements and CaCO〓as well as the susceptibility values of the strata comprehensively show that the afore-named four sandy desert areas since that time, all had ever undergone intensely developing sandy desert processes but they did not all evolve towards uniform this environment, and the content and form between them were different.

通过对中国沙区15万年来的地层及其沉积相、古脊椎动物、软体动物化石、孢粉、古人类活动遗存与颗粒、碎屑重矿物、粘土矿物、化学元素、CaCO〓分析结果和地层磁化率值等的研究，表明从那时以来上述四大沙区都曾经有过强烈的沙漠发展过程，但这几个沙区沙漠环境的发展并不都是朝着一个方向，且几者间地质过程的内容与形式是不同的。

A lid or flap covering an aperture, such as the gill cover in some fishes or the horny shell cover in snails or other mollusks.

鳃盖覆盖在一孔或缝隙上的盖，如一些鱼类的鳃或覆盖在蛇或其它软体动物身上的角质壳

A lid or flap covering an aperture, such as the gill cover in some fishes or the horny shell cover in snail s or other mollusks.

鳃盖覆盖在一孔或缝隙上的盖，如一些鱼类的鳃或覆盖在蛇或其它软体动物身上的角质壳

A lid or flap cover in g an aperture, such as the gill cover in some fishes or the horny shell cover in snails or other mollusks.

鳃盖覆盖在一孔或缝隙上的盖，如一些鱼类的鳃或覆盖在蛇或其它软体动物身上的角质壳

A lid or flap cover ing an aperture, such as the gill cover in some fishes or the horny shell cover in snails or other mollusks.

鳃盖覆盖在一孔或缝隙上的盖，如一些鱼类的鳃或覆盖在蛇或其它软体动物身上的角质壳

ScienceDaily (May 13, 2009)— Arthropods and mollusks are nature's true bluebloods – thanks to hemocyanin, an oxygen-carrying large protein complex, which can even be turned into the enzymatically active chemical phenoloxidase.

2009年5月13日科学日报报道：节肢动物和软体动物是自然界真正的贵族-由于携氧的大分子蛋白复合物-血蓝蛋白，能够被转化为具备酶活性的化学酚氧化酶。

In addition, a small number of New Zealand-shaped animals and polychaete, some Holothurian, many crustaceans and mollusks have a balance of most of the capsule, but constructed may be a slight change in position is also different.

此外，少数的纽形动物和多毛纲动物、一些海参纲动物、许多甲壳纲动物和大多数软体动物都有平衡囊，但在构造上可能略有变化，所处的位置也不同。

Weiyi linked to Banff, Jasper, Kootenay National Park and about the tiger, and Robson Hill, because of ACE Nibo Hill Park and Han Bo Pu Luo Wenxiu constitute a beautiful mountain landscape, where there are peaks, glaciers, Lakes, waterfalls, canyons and limestone caves.well-known fossil sites in the marine fossil mollusks, also found here.

逶迤相连的班夫、贾斯珀、库特奈和约虎国家公园，以及罗布森山、阿西尼博因山和汉伯普罗文秀公园构成了一道亮丽的高山风景线，那里有山峰、冰河、湖泊、瀑布、峡谷和石灰石洞穴。伯吉斯谢尔化石遗址里著名的海洋软体动物的化石，在这里也有发现。

On the other hand, alien species, which may be harmfulto crops, is a vital issue concerning pest control in agriculture. In addition, it still remains further study whether the competitive exclusion effect caused by invasive land mollusks endangers the endemic land molluscan diversity of Taiwan.

某些特定种类属於入侵之外来种，对农作物会造成相当危害，在农业病虫害防治方面亦应留意；入侵外来种陆生软体动物对原生种的竞争排斥效应，对台湾陆生软体动物多样性的威胁亦属未来研究重点之一。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐