水平和的英文：
horizontal summation

参考例句：

A matte screen with horizontal and vertical lines. This screen facilitates composition of your photograph.
具有水平和垂直线的磨砂型屏,这种屏便于您所拍摄的照片的合成。

adsorbate bacterins can vary in potency, which affects the level and duration of protection
吸附菌苗在影响保护水平和时间的能力上可能不同。

Build up the Party's governing capacity and improve its art of leadership and governance
(二)加强党的执政能力建设，提高党的领导水平和执政水平。

Build up the Party's governing capacity and improve its art of leadership and governance.
加强党的执政能力建设,提高党的领导水平和执政水平。

horizontal是什么意思：
n. 水平位置；水平线，水平面
adj. 水平的；地平线的；同一阶层的

horizontal sawtooth buff
行锯齿波缓冲|水平锯齿波缓冲

The particles will be deposited on horizontal surface.
这些粒子将沉淀在水平面上。

It's a horizontal line.
这是一条水平线。

The seat inserts feature horizontal ribbing.
座椅填料呈水平条纹状。

On a map there are horizontal lines and vertical lines.
在地图上有水平的线和垂直的线。

summation是什么意思：
n. 总和；总结

summation /totalizing current transformer
总和/总加电流互感器

summation [totalizing] current transformer
总和[总加] 电流互感器

His summation was a great piece of courtroom theater.
他的总结是个很好的法庭戏剧材料。

That means that we are going to need to
这说明我们需要计算它的和。

His summation was a great piece of courtroom theater(Ron Rosenbaum)
他的总结是个很好的法庭戏剧材料(罗恩·罗森鲍姆)