查询词典 needle

Because they are impacted by the altitude、geographic setting、slope direction、topography and soil material, so the whole vertical zone becomes fragmentation、diversity and the transition from cool-temperate mixed needle-broad-leaved forest zone to needle-leaved forest zone.

本文详细的介绍了各个垂直带的自然地理特征，归纳出整个垂直带谱具有破碎性、温带到寒带的过渡性、重叠性等特点，原因是其受海拔、地理位置、坡向、微地形、地面组成物质的分异等因素的影响。

RAPD(Random amplified polymorphic DNA) was used to detect the genetic diversity of Castanopsis eyrei populations in three forest communities at different succession stages in Tiantai mountain Zhejiang Province,namely,needle-leaved forest,needle/broad-leaved mixed forest and evergreen broad-leaved forest.

利用RAPD技术对甜槠种群在浙江省天台山不同演替阶段森林群落(针叶林、针阔混交林、常绿阔叶林)中的遗传多样性和遗传分化进行了分析。3个甜槠种群平均多态位点百分率为67.98%，总多态位点百分率为92.13%。

Qingdao city mountain the bearings roll the needle factory to locate the city District Xifu industry the park, and have to produce to roll the needle, dollar the pillar two decades with the bearings's history.

青岛城阳江山轴承滚针厂位于城阳区惜福镇工业园，有二十年生产滚针、元柱和轴承的历史。

For the aged aluminum alloys which generally contain disc/plate-shaped or rod/needle-shaped precipitates, a model has been established, from the viewpoints of thermodynamics, kinetics and strengthening theory, to relate quantitatively the yield strength to the size, volume fraction and aspect ratio of precipitates which all were analytical associated with the chemical compositions of alloys, aging temperature and aging time. This model has been experimentally proved to well predict the variation of yield strength with the evolution of disc/plate-shaped or rod/needle-shaped precipitates for present Al-4. 62wt% Cu-0.65wt% Mg alloy aged at 513K and Al-1. 12wt% Mg0.57wt% Si alloy aged at 463K, respectively, and the yield strengths simulated by this model were also found to be in well agreement with previously measured values for a series of aged Al-Cu binary alloys, AA6061 and Al-Zn-Mg alloys.

以析出热力学、长大动力学及强化理论为基础，研究了含有盘/片状、棒/针状时效析出强化相铝合金在时效过程中时效析出相尺寸、体积分数和长径比等参数的演变及其对合金时效强化效果的影响，给出了合金成分、时效变量与微观组织参数之间非线性的解析表达关系式，进而从微观结构—宏观性能相结合的角度出发建立起了具有盘/片状、棒/针状时效析出相铝合金的时效工艺—屈服强度量化模型，并将该模型应用于不同温度、连续不同时间时效下Al-Cu二元系列合金、6061铝合金和Al-Zn-Mg系列合金的屈服强度预测，得到了与前人实测值吻合良好的结果。

Inner wear parts use the wolfram steel needle and rubies bearing.The head of wolfram needle only be process by diamond,to protect the accuracy in a long term

内部的唯一磨损部位采用钨钢针尖和红宝石轴承，钨钢针尖只能用金刚石钻头才能加工出来，保证了产品长期运行的准确性

Let us assume that the wire is bent to form a circle, in the centre of which a magnetic needle is placed, both wire and needle lying in the same plane.

几年以前某些非常有名的物理学家仍想在电路断开时使磁针移动位置，但毫无结果。

To look behind the hospital, hit a two-needle needle vitamin D and calcium supplements every day, every night to eat to make a bet, but the baby appeared to have obvious or prominent chest, doctors said that if the three-year-old has not yet to resume, they would have side effects, is not the case, I am anxious!

后面去医院看，打了两针维生素D针，且每天都有补钙，每天晚上吃一粒贝特令，但孩子看上去还是有明显的胸突出，医生说，如果三岁还没有恢复的话，就会有后遗症，是不是这样，我好急！

The difference between the three-needle quilting machine and the two-needle quilting machine mainly lies in the patternsize.

手感接近红外线传感器，使你操作更安全

The max.pattern which the three needle quilting machine can make is 12by12inches,while the two-needle quilting machine can make is 6by6inches.

三针尺机弄与二针尺机型不同之处在于其三针尺绗缝花形图案大可达12&×12&，而二针尺绗缝花样图案为6&×6&。

Model classification, two, three, four, five rollers, single, double, three drafting District NC fancy twisting machine, needle plate, needle-style crochet machine; weaving machine; air deformation.

机型分类，二、三、四、五罗拉，单、双、三牵伸区数控花式捻线机，针板、针筒式钩编机；织带机；空气变形等。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷