翅

Nutlet with membranous wings, ca. 1/2 as wide as nutlet; peduncle slender, pendulous, 3-8 cm.

有膜质翅的Nutlet，大约象小坚果一样宽的1/2；花序梗纤细，下垂，厘米 3

Bark grayish brown; leaves ovate; wings of nutlet 1.5-2 × as wide as nutlet

树皮淡灰棕色；叶卵形；小坚果1.5-2的翅*和小坚果一样宽 23 Betula halophila 盐桦

Wings of nutlet ca. as wide as nutlet; female inflorescence less than 1 cm in diam.; peduncle 8-15 mm; branchlets densely resinous glandular.

约的小坚果的翅和小坚果一样宽；雌花序直径不到1厘米；花序梗8-15毫米；浓密的小枝树胶腺。

Bark black-brown, fissured; wings of nutlet ca.

树皮黑棕色，使裂开；小坚果的翅约的宽是小坚果的宽的1/2 26 Betula dahurica 黑桦

Seeds 1 or 2, oblate, winged.

种子1或2，扁球形，具翅。

Leaf blade 10--20 cm; petiole without a green margin; branches of rachis terete or slightly compressed, obtusely angled, without wings or edges

叶片10 --20厘米；没有一绿色的边缘的叶柄；轴的分枝圆柱状的或稍压扁，钝有棱，没有翅或边缘 2 Goniolimon dschungaricum 大叶驼舌草

Apex of ocrea without wing; leaf blade 0.3-4 cm wide.

没有翅的托叶鞘的先端；叶片0.3-4厘米宽。

Apex of ocrea usually with green leaflike wing; leaf blade 5-12 cm wide.

托叶鞘通常具绿色的叶状的翅的先端；叶片5-12厘米宽。

Ocrea not expanding into wings at apex.

托叶鞘不扩展到翅先端。

Ocrea expanding into green herbaceous wings at apex.

托叶鞘扩展到先端绿色的草质翅。

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。