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A plow equipped with a double moldboard that turns up the soil on each side of the furrow, often having an attached drill for seed planting.

双壁开沟犁犁头后部有两块曲面铁板的犁,可翻开犁沟两边的泥土,常附有播种机注意,注意力集中

A plow equipped with a double moldboard that turns up the soil on each side of the furrow,often having an attached drill for seed planting.

双壁开沟犁犁头后部有两块曲面铁板的犁,可翻开犁沟两边的泥土,常附有播种机那个农民将牛缚在犁上,用刺棒驱赶它们。

A plow equipped with a double moldboard that turns up the soil on each side of the furrow ,often having an attached drill for seed planting.

双壁开沟犁犁头后部有两块曲面铁板的犁,可翻开犁沟两边的泥土,常附有播种机

In this paper, a new montage mesh fusion method based on variational interpolating implicit surfaces is proposed.

提出一种基于变分隐式曲面的网格融合新方法。

The typical molten pool of high energy beam welding is in nailhead shape with large aspect ratio. In order to simulate it more precisely, a new heat source model, Rotary-Gauss body heat source model, is established.

为准确地模拟出大深宽比的"钉头"状高能束熔池形状,提出了新的旋转Gauss曲面体热源模型,并进行了实际的数值模拟与测量试验。

In order to obtain an accurate and simple design and to express the relation between design parameters, and between the parameters and the design effect,based on the mathematical model of the neckband curve of a lapel shaping device, a spreading method by using MATLAB software was introduced. The selected parameters, the spreading plot and the 3D neckband entity were all displayed visually in a computer.

在常见的制袋充填封口的多功能包装机中,翻领成型器是利用其成型表面而使薄膜在输送过程中,强迫成型的原理而设计的一种制袋成型器,广泛应用于立式间歇工作的充填封口机上,圆形加料管翻领成型器由外表面为领状而内表面为管状的内外工作曲面组合而成(如图 1所示)。

Firstly, quadric surface is approximated with the vertex and its neighboring vertexes of the triangle mesh model, and the first and the second basic quantity are calculated, then estimating the normal and curvature of the mesh vertexes, lastly OpenGL technique is used in realizing the graphics display of the triangle mesh model.

首先根据三角网格模型中的顶点及其邻接点逼近二次曲面,并计算其第一、第二基本量,然后据此估算网格顶点的法失和曲率,最后利用OpenGL技术实现三角网格模型法矢和曲率的显示。

We also obtain the necessary and sufficient condition for the correspondence between the points of $S_1$ and $S_2$ at the same rays preserving the net of asymptotic curves.

对于$T$的两个焦曲面$S_1$和$S_2$之间沿着同一光线的对应,还证明了其保持渐近曲线网的充要条件。

In addition, by examining the potential energy surfaces and the microscopic neutron single particle spectra, N =70 are suggested to be a possible neutron magic number in this region.

另外通过对位能曲面以及单中子能级的研究,提出在此区域内 N =70可能是一个中子幻数。

For a well-posed initial value problem of PDE, this paper estimates the values of its unknown functions on the initial surface with the kernel method in nonparametric regression analysis to deal with the data collected at different time and different positions.

对于一个适定的偏微分方程组广义初值问题,该文利用非参数回归分析中的核估计方法,对在不同时间和不同空间记录下的数据进行整合,估计出未知函数在初始曲面上的值。

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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。