定义了上三角等次对角线矩阵和上三角交错次对角线矩阵；
This paper defined up-triangle equal minor diagonal matrix and up-triangle stagger minor diagonal matrix.
她说：“在伊洛瓦底江三角洲，由于那里数百条河流、数百个小岛星罗棋布，纵横交错，一些地方只能乘船和橡皮船才能进去，救援物资运送的困难可想而知。”
"In the Irrawaddy Delta, we have a logistical nightmare because of those hundreds of rivers, hundreds of small islands and... some places are only reachable by boat, inflatable boats," Byrs said.
河流从这个三角洲流入卡拉·哈里沙漠的一个盆地，形成纵横交错的咸水湖、河道及岛屿，在那里，野生动植物比比皆是，即使在极为干燥的季节，草木依然丰茂。
The delta forms where the river empties into a basin in the Kalahari Desert, creating a maze of lagoons, channels and islands where vegetation flourishes, even in the dry season, and wildlife abounds.
有两个角的平面和两个交错的垂直平面。
There are two horns in the horizontal plane, and two staggered in the vertical plane.
黑线在地板上布置成迷宫状，整条轨迹线包含90度角的转弯，其它角度的转弯或是曲线，但不会出现线条交错现象。
The black line traces a maze on the floor. It may have 90 degree turns in it, turns of other angles, or curves. The line will never cross itself.
当蜗轮蜗杆的交错角为时，还需保证，而且蜗轮与蜗杆螺旋线旋向必须相同。
When the worm crisscross Angle, still need to ensure that's too, and worm gear and worm helical screw to must be identical.
二楼弧顶和尖顶三角楣饰交错排列，这是帕拉第奥风格的一个标志性特征。
On the second floor the pediments are alternately curved or pointed, a Palladian trademark.
所述的长方形地板交错时采用搭接方式；所述的长方形、正方形和三角形地板相互组合后并于接口处略涂胶水。
The rectangle floor adopts a split joint mode when being staggered, and the rectangle, square and triangle floors are mutually combined and slightly coated with glue at the connection thereof.
所述的长方形地板交错时采用搭接方式；所述的长方形、正方形和三角形地板相互组合后并于接口处略涂胶水。
The rectangle floor adopts a split joint mode when being staggered, and the rectangle, square and triangle floors are mutually combined and slightly coated with glue at the connection thereof.
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