查询词典 twin

They found duplicate fgfr1 genes in two varieties of mirror carp: One had lost 111 bases from the twin gene, and another had a base substitution in the twin gene, both of which had presumably led to fewer scales.

随后他们根据不寻常的特征筛查了发生突变的斑马鱼。其中的一个突变便是几乎全身没有鳞片，这不禁使人想起了镜鲤--为了容易打理而没有多少鳞片的一种鱼--的培育。

Displacing 1854cc (113 cubic inches), the 48 degree V-twin air-cooled OHV 4-stroke engine benefits from a highly advanced specification that includes 4-valve twin-spark plug cylinder heads, forged pistons, pent roof combustion chambers, EXUP, oil cooling, fuel injection, 100mm diameter plated cylinders and a hydraulic clutch.

驱1854cc， 48度V型双风冷式ohv四冲程发动机的好处从一个高度发达的规格，其中包括4气门，双火花塞缸盖，伪造活塞，压抑的屋顶燃烧室， exup ，油冷却，燃油喷射， 100毫米直径的镀缸和液压离合器。

By comparison, the TATSR has higher efficiency of pumping. plasticization and mixing than that of twin screw reactor. At the same time, the productivity ratio of TATSR is bigger than that of twin screw and four-screw extruder. So TATSR has a good outlook of engineering application.

与双螺杆反应器相比，三螺杆反应器具有较强的物料输送能力、塑化和混合能力；同时，三螺杆反应器的产能比又大于双螺杆和四螺杆反应器，因此，三螺杆反应器具有较好的工程应用前景。

I owned a Polytone, which is kind of like a Fender Twin Reverb, except the Twin is much too heavy for me.

我拥有一搡，这有点像一护舷双混响，除了双太对我来说太重。

On the rhombohedron face {1011}, Dauphine twinning showed different shapes of etching pits between individuals, because rhombohedron positive form {1011} and negative form {0111} appeared on both sides of twin partition line, while Brazil twinning showed symmetry plane between the irregular triangle etching pits of individuals. On the trigonal prism section 11(average20, Dauphine twinning showed different shapes of etching pits between individuals, because trigonal prism positive form {1120} and negative form {2110} appeared on both sides of twin partition line, while Brazil twinning should show symmetry plane between the ellipse or quadrilateral etching pits of individuals, which was not observed.

菱面体{1010}面上存在道芬双晶处，道芬双晶双晶缝合线两端分别是菱面体正形、菱面体负形出露处，导致蚀坑形状不同；菱面体{1011}面上存在巴西双晶处，不规则三角形蚀坑形态的方位关系为对称面关系；三方柱切面{1120}面上存在道芬双晶处，道芬双晶双晶缝合线两端分别是三方柱正形、三方柱负形出露处，导致蚀坑形状不同；三方柱切面{1120}面上存在巴西双晶处，椭圆形或四边形蚀坑方位应为对称面关系，但实验中未见到。

It has been found that there are some texture flaws such as large grain、badly distorted twin and streaky structure. But recrystallization grains ofaround 19μm in diameter on average are obtainable through heat treatment at300℃for 30min by air-cooling, meanwhile the twin and streaky structurethat would weaken the plasticity of alloy are eliminated; significant elementsare holding temperature、holding time、cool-down methods. Mechanicalproperties of tube are obtained, simple tension elongation ratio of arc testsample increases from 10.8% to 20.1%, elongation ratio with elastic internaldie of tube increases from 8.0% to 14.9%.

研究结果表明：挤压成型的AZ31镁合金管材组织中存在变形程度很大的孪晶、大尺寸晶粒、丧失了进一步变形能力的条带状组织等易导致后续塑性加工时变形不均，引起断裂的组织缺陷；采用最佳等温热处理工艺以20℃／min加热至300℃保温30min后空冷处理可以使试样平均晶粒直径从挤压态的50μm细化为19μm，同时基本消除上述组织缺陷；明显影响热处理效果的因素为保温温度、保温时间、冷却方式；室温下，采用最佳工艺热处理前后管材弧形试样的单向拉伸伸长率由10.8％提高至20.1％，管件的自由胀形极限伸长率由8.0％提高至14.9％。

On the basis of the research on the typical high-speed passenger ship with twin skeg in the Yangzi River, the research and development of twin skeg ship are analyzed, including the problems of propulsive efficiency, vibration and the study of ship forms with large block coefficient and shallow-draft.

在对长江典型双尾鳍快速客船调研的基础上，就双尾鳍船型的研究与发展，从推进效率、振动、大方形系数船型及浅水船型的研究等方面进行了分析

The paper putsforword a kind of fishing boat ship form with better seakeeping quality, speed and powering performance-twin skeg stern ship form matching twin-screw,it may get better effect.

然而在相对较瘦的小型渔船上未见有所应用、作者通过理论分析，在国内提出在渔船上采用双尾鳍船型。

Methods The components of somatotype were calculated by using Heather-Cater method in a total of 376 twin pairs of Han nationality,including 245 monozygotic and 131 like-sex dizygotic twin pairs aged 6 to 18 years.

方法采用Heath-Carter法对376对6~18岁同性别汉族双生子(同卵双生子245对，异卵双生子131对)的体型三因子进行计算。

Methods The triceps and subscapular skinfolds were measured and the body composition were estimated by using Changling's and Brozek's models in a total of 376 twin pairs of Han nationality,including 245 monozygotic and 131 likesex dizygotic twin pairs aged 6 to 18 years.Modelfitting method with Mx package was performed to evaluate the proportion of variance components and to analyze the effect of sex,age and development period on the skinfold thickness and body composition.

测量376对6～18岁同性别双生子(同卵245对，异卵131对)肱三头肌、肩胛下皮褶厚度，用长岭和Brozek公式估算体成分；用Mx软件拟合最佳模型，计算各指标遗传与环境方差组分，分析年龄、性别和不同发育期的作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。