查询词典 triangular number

Gynobase flat. Nutlets 4, erect, ovate-triangular, length and width subequal, adaxially usually ribbed, abaxially slightly convex; attachment scar basal.

小坚果4，直立，卵状三角形，近等长的长度和宽度，正面通常用助材加固，背面有点凸；附件痕基部。

Nutlets 4, horizontally rotate spreading from gynobase, dorsiventrally compressed, ovoid, marginal rib with triangular glochids, margin with smaller glochids; large prickles confluent into a broad wing; attachment scar apical.

小坚果4，水平旋转从雌蕊基传播，背面压缩，卵圆形，边缘的肋骨用三角形的钩毛，边用更小的钩毛；大的皮刺汇合的成为一宽的翅；附件痕顶端。

In chapter 2, we study a kind of operator algebra acted on the Hilbert space H which is called the closed weakly reducible maximal triangular algebra, denoted by S.

第二章我们研究了一个作用在Hilbert空间Η上的闭弱可约极大三角代数S，证明了S的系数在Β中的任意阶完全有界Hochschild上同调群H_~nS，Β(Η(n≥1)是平凡的。

A handsaw with a thin triangular blade for cutting curves.

有细的三角形刃片可以切断曲线的手锯。

Large and usually triangular; carried by a yacht as a headsail when running before the wind.

通常大并且是三角形的；逆风行驶时快艇使用的前帆。

A:Shape: is it round, triangular, square, or heart-shaped?

形状：是圆的，三角形的，方形的还是心形的？

Conclusion. In most cases, the vertebral body shape is hemispherical in the upper part of the pedicle and triangular in the lower part of the pedicle.

大多数的病例，椎弓根上半部的椎体外形为半球形，下半部为三角形。

The shape of the vertebral body has been seldom looked into, and the findings obtained show a triangular shape and hemispherical shape, supposedly owing to interpersonal variability.

半球形时椎弓根螺钉可以分散导入，但是三角形时，椎弓根螺钉的导入要有一个汇聚的角度，但仍有穿破骨皮质的风险，除非遵循这些指导方针。

In the upper part the vertebral body is hemispherical whereas in the lower part it is triangular.

上半部的椎体外形为半球形，而下半部为三角形。

Or you could try to make a maze with triangular or hexagonal cells or with curved lines.

或者你也可以试着用三角形、六边形和曲线来作一些迷宫。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。