圆柱

Branchlets terete, with stout brownish or white bristles to 1.5 cm at nodes, glabrous when old.

小枝圆柱状，有对1.5厘米在节上，无毛的老时的坚固的带褐色的或白色硬毛。

Stems terete when mature; leaves ovate to elliptic or obovate, subacute to rounded

成熟时的茎圆柱状；叶卵形的到椭圆形或倒卵形，近尖到圆形 5

Stem simple or branched, terete, hollow except at nodes.

茎单一或分枝，圆柱状，除在节上之外中空。

Scape 25--30 cm, terete, covered with leaf sheaths only at base.

Scape 25-30厘米，圆柱状，被叶鞘覆盖只在基部。

Branches terete, nodes sometimes with spines.

圆柱状的分枝，有时节具刺的。

Stems 4-sided or terete, winged or not on angles, pubescent.

茎4边或圆柱状的，具翅或不具角，短柔毛。

Leaves alternate, oblong to linear, terete, fleshy.

叶互生，长圆形到线形，圆柱状，肉质。

Stem terete or with 4--8 low, longitudinal ridges.

茎圆柱状或具4 --8 在低处，纵脊。

Lianas; branches terete, gray-brown and glabrous when young.

藤本植物；枝圆柱状，灰色棕色和无毛的幼时。

Petiole slender, 2.5-6.5(-10) cm, base terete, swollen; leaves clustered terminally

纤细的叶柄，2.5-6.5(-10)厘米，圆柱状的基部，膨胀；终点的叶簇生 25

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。