平行四边形

Basal leaf blade rhomboid, ovate-rhomboid, or suborbicular, 2-3 mm

基生叶斜方形，卵形平行四边形，或近圆形，2-3毫米 12 P。

Record each move and record the instruction eg rotate 90 to the right.

每次移动记录指令，如：向右旋转90度）上课时，教师稍作解释，然后每个学生分发到一块积木和一张8开白纸，积木有三角形、有正方形、有长方形、有平行四边形，学生就按照白板上的要求认认真真制作了一节课。

A rubber strip (10) may be scalene triangular shape, a trapezoidal shape or a parallelogram shape having has a bottom line (11) forming a strip width, a first diagonal line (12) extending from one end of the bottom line (11) and a second diagonal line (13) extending from the other end (P2) of the bottom line (11), a length (L0) of the bottom line is set to 5 to 50 mm, and a thickness thereof is set to 0.2 to 5.0 mm.

橡胶条(10)的形状可以是不等边三角形、梯形或者平行四边形，上述形状具有形成条宽的底边(11)，延伸自底边(11)一端的第一斜边(12)和延伸自底边(11)另一端(P2)的第二斜边(13)，底边的长度(L0)设定为5-50mm，其厚度设定为0.2-5.0mm。

In this paper,three problems are researched.First,a method for recognizing triangle and quadrangle is introduced based on geometry and angle constraint.Then Attribute Relation Graph is employed to describe simple polyhedron and line drawing.

依据投影几何中的距离约束和角度约束，给出了三边形和平行四边形的识别方法；提出用属性关系图表示平面立体和线图，该描述方法是一种结合表面特征和几何特征的方法。

The first SunTour Skitter was an inexpensive stamped steel parallelogram rear derailleur made in the early 1960s.

第一山图Skitter是一种廉价的冲压钢平行四边形后拨60年代初提出。

Area of a Parallelogram, Determinants, Volume and Hypervolume, the Vector Product

平行四边形的面积，行列式，体积，超体积以及向量积

The bending problem of simple-supported parallelogrammic plates on Winkler foundation is reduced to two simultaneous Fredholm integral equations of the second kind by applying Green quasifunction method. The Green quasifunction is set up by using the fundamental solution of Poisson equation and the normalized boundary equation.

应用准格林函数方法，即利用方程的基本解和规范化的边界方程构造一个准格林函数，将Winkler地基上简支平行四边形薄板的弯曲问题化为两个耦合的第二类Fredholm积分方程，此积分方程的核表示式在区域的边界上具有奇异性。

Compound 4 exhibits an unusual 2-D (4,6)-lattice-type network constructed by the [Co222]2- dimers and [Co(H2O)2]2+ units. As for Compound 5, four basic units link to each other form an approximately parallelogrammic pore, which constructed a 2-D covalent bond double-layers network.

化合物4展现出由[Co_2_2_2]~(2-)二聚体和[Co(H_2O)_2]~(2+)组成的具有4、6两种格子的不同寻常的二维网状结构，化合物5以类平行四边形孔道为基本单元构筑了二维共价键网络结构。

It avoids the parallelogrammical output machine with a complicated planetary wheel system and the flexible wheel of resonance wave transmission, shortens the movement chain observably and reduces the loss of movement transfer.

偏心轮推杆行星传动属于活齿少齿差传动，它的推杆结构成功地解决了输入轴与输出轴同轴的问题，避免了复杂行星轮系的平行四边形输出机构和谐波传动的柔轮，显著缩短了运动链、减少了运动传递的损失。

Based on the theory of hanging on laneway roof with roof bolt and taking the bolt as base point, this new preceding support can work in the free space on the laneway roof, allowing other equipments such as the entry-driving machine work at the same time, thus improving the utilizing efficiency of the laneway. On the cirques track of bolts, its three groups of claw, which are driven by hydraulic force, work as fulcrums to one another to push the support move forward.

基于顶板锚杆悬挂理论，以锚杆为基点，采用自制圆形梁为执道，以液压力驱动3组机爪互为支点实现超前支架在巷道顶部空间的迈步前移，采用具有顶板适应性的变运动方向平行四边形机构作为超前支护机构，来实现超前支架的支护作业。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。