鳍

The fossil was found on Devon Island in the Canadian Arctic, bolstering the notion that the far north was an early center of pinniped evolution, she said.

她说，这块化石是在加拿大北极地区Devon岛被发现的，进一步巩固了鳍足动物进化的早期中心区是位于远北的想法。

Pinniped mammal having external ear flaps and hind limbs used for locomotion on land; valued for its soft underfur.

鳍足动物，有外耳廓，后肢用于在陆地上行走；以其柔软的下层绒毛而名贵。

Characteristics can not fly; legs was born in the most lower body, it was upright posture; toes webbed; plantigrade sex; forelimbs into flippers; feathers short, in order to reduce friction and turbulence; retention layer of air between the feathers for insulation .

特征为不能飞翔；脚生于身体最下部，故呈直立姿势；趾间有蹼；跖行性；前肢成鳍状；羽毛短，以减少摩擦和湍流；羽毛间存留一层空气，用以绝热。

The effect of pH on digestive enzyme activity of alimentary organs in yellowfin black porgy was studied in this paper.

研究了pH值对黄鳍鲷肝、胃、肠3个部分主要消化酶（蛋白酶、脂肪酶和淀粉酶）比活的影响。

In addition, the dose-response experiment of hepatic EROD in porgy induced by 0# disel oil WAF was studied to dsicuss the possibility to use it as a biomarker for monitoring environmental pollution.

另外，也初步开展了黄鳍鲷肝微粒体EROD的剂量—效应研究，探讨了这种鱼肝微粒体EROD酶作为污染监测指标的可能性。

In Japan, Pacific bluefin numbers also have been dropping precipitously, The New York Times reported.

另据《纽约时报》报道，在日本，太平洋蓝鳍的数量也在急剧下降。

A redfin butterflyfish navigates the coral of Fiji's Vatu-i-ra Channel.

红鳍蝴蝶鱼穿梭在斐济拉礁海峡的珊瑚中。

Redfin Butterflyfish, Fiji, 2004

红鳍蝴蝶鱼，斐济，2004

From March, 2001 to January, 2002 the resting metabolic rates for 114 fish of Mystus macropterus, which were collected from Jialing River with weight ranging from 13.0g to 400.4g, were measured by a closed respirometer at the temperatures of 12.5, 17.5, 22.5 ,27.5 and 32.5, respectively.

于2001年3月至2002年1月，以由嘉陵江采集到的大鳍鳠作为实验材料，采用封闭式呼吸室，分别在12.5℃，17.5℃，22.5℃，27.5℃和32.5℃水温条件下，测定了114尾鱼体(体重范围13.0—400.4g)的静止代谢率。

Other baleen whale s are the blue, fin, gray, humpback, and sei whale s and the rorqual.

其它的须鲸有蓝鲸、鳍鲸、灰鲸、驼背鲸、鳕鲸和鲸。

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。