abaxial surfaces convex, crustaceous, narrowly ribbed around margin, sessile.
背面凸，壳质，在边缘，无梗周围的狭窄棱。

The cetaceans are on the whole the most peculiar and aberrant of mammals, he remarked peevishly.
总而言之，鲸类是最奇特和最反常的哺乳动物。

It suggests that the tegument of metacercaria is the main absorptive site of nutrients.
结果提示皮层是后尾蚴吸收营养物质得主要部位。

Accumulation and distribution conditions of natural gas from Crom Cretaceous of southern Songliao Basin
松辽盆地南部白垩系天然气成藏条件

Acute toxicity data for freshwater organisms is available on algae, crustaceans and fish.
藻类，甲壳类和鱼类都有相应的淡水生物急性毒性数据。

Any of various small terrestrial or aquatic crustaceans with seven pairs of legs adapted for crawling.
各种小型的陆栖和水栖类甲壳动物, 有七对腿, 适于爬行。

BESTSAFEINVEST ALIBI Administration explained that their site has been inaccessible due to the troubles with their datacenter.
站长解释, 他们的站点由于数据库出错而无法访问。

ANALYSIS OF ANTIGENS OF ADULT AND METACERCARIA OF PARAGONIMUS WESTERMANI
卫氏并殖吸虫成虫和囊蚴抗原分析

The size of cercariae, metacercariae, eggs and adult worms was measured.
测量尾蚴、囊蚴、虫卵和成虫的大小。

Comparison in morphology of metacercariae and adult worms of P. veocularis and P. skrjabini.
比较斯氏狸殖，泡囊狸殖囊蚴与成虫等形态，结构特征。

The Research Advance of Virus Diseases in the Cucurbitaceae
瓜类作物病毒病的研究进展

A NEW ADVANCE IN THE STUDY OF THE CRETACEOUS OF THE LEDONG BASIN ON THE HAINAN ISLAND
海南岛乐东盆地白垩系研究新进展

A NEW ADVANCE ON STUDY OF THE EARLY CRETACEOUS STRATA IN THE EASTERN MARGIN OF THE CENTRAL SONGLIAO BASIN,JILIN PROVINCE
松辽盆地中部东缘早自垩世地层研究的新进展

Advancement of the study on respiratory metabolism of decapod crustaceans
虾蟹类呼吸代谢研究进展

The Characteristics of Aeolian Sandstone of the Cretaceous System in Jingyuan County, Gansu Province
甘肃靖远白垩系风成砂岩特征

Important changes are afoot in datacenter storage technologies.
资料处理中心储存技术正在作一些非常重要的改动。

West African Talks on Cetaceans and Their Habitats, October2007.
关于鲸目动物及其生境的西非会谈，2007年10月。

The story takes place 6500 years ago in the Cretaceous period.
故事发生在6500万年前得白垩纪晚期。

Agreement on Small Cetaceans in the Baltic and North Sea
关于波罗的海和北海小鲸目动物的协定

Occurrence Rules Of Malacosoma Neustria Testacea Motschulsky And Its Airplane Prevention.
黄褐天幕毛虫发生规律及其飞机防治的研究

Hydrocarbon generation of laminar algal limestone of Lower Cretaceous in the Jiuxi Depression, NW China
酒西坳陷下白垩统藻纹层灰岩生烃特征

amentaceous plant
柔荑花序植物

Genus of herbivorous dinosaurs flourishing during the Cretaceous in South America.
在南美洲于白垩纪兴起的一种食草恐龙。

amphipod crustacean parasitic on cetaceans.
寄生在鲸身上的片足甲壳动物。

Morphological and Anatomical Studies on the Medicinal Material of Equisetaceae from Shandong Province
山东产木贼科草药形态解剖学的研究