鳍

A low viscosity oil designed for punching pre-coated aluminium sheet, copper tube expansion and bending.

低粘度金属加工油，适合于空调行业中预涂铝鳍片的冲孔加工，也适合于铜管的弯管和胀管加工。

A low viscosity oil designed for punching pre-coated aluminium sheet, copper tube expansion and bending.

适合于空调行业中预涂铝鳍片的冲孔加工，也适合于铜管的弯管和胀管加工。

Most primitive teleost fishes; all are soft-finned: salmon; trout; herring; shad; sardines; anchovies; whitefish; smelts; tarpon.

最远古的硬骨鱼类；软鳍；大麻哈鱼；鲑鱼；青鱼；美洲河鲱；沙丁鱼；风尾鱼；鲑鱼；胡瓜鱼；大海鲢。

The ship is designed to be steel weld construction with bulb bow, inclining stem, transom stern and twinskeg.

本船设计为具有球鼻首、倾斜艏柱、方艉和双艉鳍的钢质全焊接结构。

I hauled up two fish which I kept: a plump yellow fish spotted in green with a thin dorsal fin and an overbite and a puny blue torpedo-shaped guy with a Chinese junk sail of a top fin.

我抓到两条鱼并把它们拖了上来：一条胖胖的有黄色斑点的黄色的鱼，有一条薄薄的背鳍和一个天包地的牙，另一条弱不禁风的蓝色鱼雷形的家伙在顶鳍上长着中国式帆。

Small tadpole-shaped cold-water fishes with pelvic fins ''.

小的蝌蚪形冷水鱼，长有形成吸盘的腹鳍；与圆鳍鱼科有关。

Based on the characteristics of twin stern hull form of a fast speed passenger ship, this paper carries out the theoretical design and experimental research of energy saving appendages around the flow field of screw propeller.

针对双尾快速客船的船型特点，以具有典型性的优良船型为母体，围绕螺旋桨流场，进行导轮、尾框鳍、舵球等附体的理论设计与试验研究，探讨适用于内河快速客船的几项附体节能技

Small spiny-finned fishes of both salt and fresh water.

生活于海水或淡水的小型刺鳍鱼。

Spiny-finned food fishes of warm waters having well-developed teeth .

长有发达的牙齿和刺状鳍的食用鱼。

Anglers and batfishes; spiny-finned marine fishes having pectoral fins at the ends of armlike processes and a long movable spine on the dorsal fin to lure prey to the large mouth.

鮟鱇和圆燕鱼；鳍呈刺状的鱼类，其胸鳍生于一个臂状突出物的顶端，脊骨生于背鳍之上，较长，可移动，用以将猎物吸引至其大嘴边。

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。