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A line of punch positions parallel to the Y datum line of a punch card.

和卡片的y基准线平行的一行穿孔位置。

Now is a good time to go back to bed if you do not know what a vertex is, but in a geometry for dummies fashion, I will let you in on the secret: a vertex is the location of a point in space, usually described by its x, y and z Cartesian coordinates.

现在是一个很好的时间去回到床上如果你不知道什么是顶点，但在时装几何傻瓜，我将让你的秘密：一个顶点是一个点的位置在空间，通常是描述其x，y和z直角坐标系。

X and y are Cartesian coordinates representing the zonal and meridional directions, and u and v are the corresponding velocity components.

x 和 y 分别表示笛卡儿坐标系中的纬圈和经圈方向，而 u 和 v 分别是这两个方向上的速度分量。

It is Cartesian because it allows x-y-z positioning.

这是笛卡尔的因为它可以让x-y-z坐标系定位。

We use the waveguide simulation software BeamPROP? to analyze the effects of the Y-branch angle, the radius and central angle of arc waveguides, and the length of straight waveguide on insertion loss and nonuniformity.

采用光波导数值模拟软件BeamPROP~分析Y分叉角度、圆弧波导的半径与圆心角、直波导长度等结构参数对插入损耗与分光均匀度的影响。

Is the centre of a circle of radius 1 and X, Y are points on the circumference.

是某个半径为1 的圆形的圆心，X、Y 为圆周上的两点。

So we just check that point which is the point X equal 1, and Y was 2, right?

所以，我们来验证那个点，这个点上X=1，Y=2，对么？

Recently,many articles reported the close correlation between human height and gene polymor- phism,such as GH1 gene, VDR gene ,CYP19 gene,estrogen receptor gene and a few regions in the Y chromo- some.

GH1基因、 VDR基因、CYP19基因、雌激素受体基因以及Y染色体均与人的身材高矮有密切联系。

I don't care about your Y chromosome.

我不在乎你的Y染色体

It yields an accuracy rate of over 90% for X chromosomes, and over 80% for Y chromosome.

它会产生一个以上的X染色体，90％的准确率，超过80％的Y染色体。

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％。