查询词典 brachiopods

One of the paired, hinged shells of certain mollusks and of brachiopods.

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Shelly creatures such as trilobites and brachiopods, of whose ancestors there is little sign in the rocks, are suddenly everywhere.

像三叶虫和腕足类一样的贝壳类生物是谁的祖先在岩石中得到一点提示，这些东西到处都是。

Shelly creatures such as trilobites and brachiopods, of whose ancestors there is little sign in the rocks, are suddenly everywhere.

像三叶虫、腕足动物此般壳类动物的祖先没有在岩层中留下什么痕迹，但它们的遗迹却突然间比比皆是。

Mainly by the size of the distribution of sea lilies stems and small brachiopods and elastic.

主要由密集分布的大小不一的海百合茎及少量腕足类等生物碎屑组成。

Sponges, corals and brachiopods, however, cannot do this.

而海绵类、珊瑚类和腕足类动物则做不到这一点。

More than 90% of Permiangenera of sponges, corals and brachiopods vanished in the extinction.

由于个体种化石的的数量统计随着时间的推移而变化，研究生物灭绝的古生物学家们更倾向于对称为类的有相互联系的整个物种种群进行统计研究。

Sponges, corals and brachiopods, however, cannot do this.

而海绵类、珊瑚类以及腕足类生物却做不到这一点。

More than 90% of Permiangenera of sponges, corals and brachiopods vanished in the extinction.

高过百分之九十海绵类、珊瑚类以及腕足类生物在大灭绝中消失了。

More than 90% of Permian genera ofsponges, corals and brachiopods vanished in the extinction.

高过百分之九十海绵类、珊瑚类以及腕足类生物在大灭绝中消失了。

The relative sea level changes obviously controlled the evolution of brachiopods in the study area during this period.

此期该区腕足动物的演化明显受控于相对海平面变化。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。