查询词典 echinoderms

The coelom formed from a pocketlike outgrowth of the wall of the archenteron, especially in echinoderms and ''.

肠体腔由原肠壁的袋装生长而形成的体腔，尤其存在于棘皮动物和脊索动物中

The coelom formed from a pocketlike outgrowth of the wall of the archenteron, especially in echinoderms and chordates.

肠体腔由原肠壁的袋装生长而形成的体腔，尤其存在于棘皮动物和脊索动物中

The animal's diet consists of a variety of bivalves, snails and echinoderms, as well as other crustaceans such as hermit crabs.

动物的饮食包括各种各样的贝类，蜗牛和棘皮类，如寄居蟹以及其他甲壳动物。

The fourth milestone was in the embryonic stage of development . Vertebrates and echinoderms began to develop differentiated mouth structures from secondary openings off the blastopore ( an initial opening in the embryonic cavity ).

第四个重要事件出现动物的胚胎发育期，脊椎动物和棘皮动物开始在胚孔（即动物早期胚胎原肠的开口）相对的一端另行开口，并最终发育为成体的口。

It may include the remains of bottom-dwelling forms (e.g. ammonites, echinoderms, and pelecypods), and nodules of chert and pyrite.

它可以包括海底形态的残留物（即鹦鹉螺化石、棘皮动物和瓣鳃纲斧足类动物）和燧石和黄铁矿的结节。

From wikipedia: Like other echinoderms the cuke has a type of collagen in its skin capable of excreting or absorbing more water effectively changing from a 'liquid' to a 'solid.

和其他棘皮类动物一样，海参的肌肤内有一种胶原质，能有效排出或者吸收更多水，在液态和固态之间转换。

The planktonic larvae of echinoderms and decapod crustaceans have increased in abundance from 1958 to 2005, and especially since the mid-1980s, as North Sea SST has increased.

棘皮类和甲壳纲的十足类浮游动物的幼体从1958年到2005年一直处于增长状态，尤其是在80年代中期，这是由于北海海水的表面温度增长的缘故。

Primitive echinoderms having five or more feathery arms radiating from a central disk.

原始的棘皮动物，有五只或更多的软臂从中心圆盘放射状伸出。

A perforated platelike structure in most echinoderms that forms the intake for their water-vascular systems .

筛在大多数棘皮动物身上的一个多孔板状的结构，构成它们水管系的进口

Comparative studies of immune functions in echinoderms have demonstrated that there is a complement system in echinoderms that appears to have alternative pathway and lectin pathway but lack classical pathway and terminal pathway.

比较免疫学分析表明，棘皮动物存在脊椎动物补体系统的替代途径和凝集素途径，但未发现经典途径和明确的终端途径。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。