三角

The plane shape of triangle block was given in this test, then theoretically the main influencing factors on roughness of quincunx-pasted triangle blocks were as following: thickness, lateral distance,...

通过水槽均匀流试验，计算得出了不同粘贴方向、不同三角块厚度、不同布置间距和不同水深条件下若干种粘贴方案加糙糙率大小。

Ability to work with mathematical concepts such as probability and statistical inference, and fundamentals of plane and solid geometry and trigonometry.

具有应用数学理念如概率和统计推论、平面、立体几何和三角法。

By means of spherical graphics and plane trigonometry, space angle and space point coodinates are calcullated for three sets of combined fixture s as examples.

运用球面图法及平面三角法，计算了三种组合夹具实例的空间角度及空间点的坐标。

By means of spherical graphics and plane trigonometry, space angle and space point coodinates are calcullated for three sets of combined fixtures as examples.

运用球面图法及平面三角法，计算了三种组合夹具实例的空间角度及空间点的坐标。

Institute (Chengdu Aircraft Design Institute) initiated studied on the "tailless delta-canard" wing planform as early as the late 1960s.

611所早在1960年代末就开始研究鸭式无尾三角翼布局飞行平台。

Electrical appliance screws, computer screws, toy screws, triangle screws, non-standard screws, cup head screws, nuts, plugboard screws, rivets, rivet bushings, cup nuts, combined screws

专业生产各类电器螺丝、电脑螺丝、玩具螺丝、三角螺丝，非标螺丝、杯头螺丝、螺母、介子、线路板螺丝、压铆件、铆钉衬套、罩形螺母、组合螺丝

Rainfall was observed with pluviometer, Usingthin triangle-weir and water line meter observed runoff and using flow meter and HOBOautomatic observed flux and velocity of flow.

降雨采用雨量计实时观测，地表径流采用薄壁三角堰加水位计自动记录流量，壤中流采用翻斗流量计加HOBO自动记录流量及流速。

Guangzhou City Fangcun Chao Jin horticultural field, since 1990 has been engaged in more than ten years of history, in the Pearl River Delta and the eastern region has large-scale nursery production base, the annual production of hundreds of thousands of potted plants in the Guangdong and Guangzhou all with the marketing department, there is rich variety of Podocarpus, modeling Longbai, Bougainvillea spectabilis bagged products for the African Jasmine said to provide long-term×°plants, landscape transformation.

广州市芳村潮锦园艺场，从1990年起从事至今已有十几年历史，在珠三角与粤东地区拥有大型苗圃生产基地，年生产各种盆栽植物几十万盆，在粤东和广州各设有营销部，盛产有各种规格的罗汉松，造型龙柏、三角梅袋装非洲茉莉成品为著称，长期提供花卉植物租摆、园林绿化改造。

Note that t does not have direct interpretation in terms of an angle but (as anyone familiar with trigonometry will conclude from the figure below) can be related to the polar angle from the ellipse center as

请注意吨没有在一个角上直接的解释，（如人与三角熟悉将从如下图结束），可以与从椭圆中心为极角："/页"

Specifically, we apply the polar form in the conversion between triangular Bezier surfaces and rectangular Bezier surfaces. This problem helps us to understand the theory of polar form in a unified way. At the last half of this paper, we consider the problem of geometric continuity of parametric curves and parametric surfaces.

我们利用Polar形式实现了三角Bézier曲面和四边Bézier曲面之间的相互转化，同时通过应用，我们对Polar形式也有了一个统一、全面的认识；论文的后半部分考虑了参数曲线曲面间的几何连续性问题。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐