平行脉的

Abaxial surface of leaves with arachnoid hairs, and very prominent parallel cross-bars on veinlets.

叶背面具具蛛丝状毛的毛和在细脉上的非常突出的平行的横脉。

Results showed: in Podocarpus leaves, there is only one midrib, the xylem tracheid of midrib vascular bundle is multi-form, transfusion tissue belongs to Cycas-type and transfusion tracheids are isodiametric, the accessory transfusion tracheids between palisade tissue and sponge tissue are developed; in Nageia leaves, there are plenty of parallel leaves, the xylem tracheids of each vein are relatively simple, transfusion tissue belongs to Taxus-type and transfusion tracheids are longer in longitudinal section than that in transverse section, the accessory transfusion tissue between palisade tissue and sponge tissue is absent.

结果表明：罗汉松属叶1条主脉，主脉维管束木质部管胞发达，转输组织为苏铁型，转输组织管胞等径，栅栏组织和海绵组织之间的副转输组织管胞发达；竹柏属叶多条平行叶脉，维管束木质部管胞相对不发达，转输组织为红豆杉型，转输组织管胞纵向伸长，栅栏组织和海绵组织之间不存在副转输组织。

Petiole 5-7 mm, pubescent; leaf blade dark or purple-green, glossy adaxially, light green abaxially, orbicular or elliptic to oblong, sometimes obovate, 5-9 × 2.8-6 cm, leathery, both surfaces glabrous, but sometimes puberulous along margin, base broadly cuneate, apex acuminate or acute, apiculate; lateral veins 15-20 pairs, more conspicuous abaxially, veins and veinlets slender, subparallel, obscure.

叶柄5-7毫米，具短柔毛；叶片深色的或紫色绿色，正面有光泽，淡绿背面，圆形的或椭圆形到长圆形，有时倒卵形， 5-9 * 2.8-6 厘米，革质，两面无毛，但是有时被微柔毛的沿边缘，基部宽楔形，先端渐尖或锐尖的，具细尖；侧脉15-20 对，更多的背面明显，脉和细脉纤细，近平行，不明显。

Leaves crowded toward apex of stems or spaced along distal part of stems, sessile or petiolate; petiole to 8 cm, base amplexicaul; leaf blade usually sword-shaped to elliptic-lanceolate, veins truly parallel from base, lateral veins absent.

叶密集向茎先端，或在茎上部间隔的，无柄或具叶柄；叶柄给8厘米，基部抱茎；叶片通常剑形到椭圆形披针形，脉真地平行的自基部，侧脉无。

Leaves distichous, simple, those toward base of plant usually bladeless and reduced to sheaths; leaf sheath open; ligule usually present; petiole present or not, located between leaf blade and sheath, cushionlike in Zingiber ; leaf blade suborbicular or lanceolate to narrowly strap-shaped, rolled longitudinally in bud, glabrous or hairy, midvein prominent, lateral veins usually numerous, pinnate, parallel, margin entire.

单叶二列，基部的叶通常无叶片，退化成叶鞘；叶鞘开放叶舌通常有；叶柄有或无，位于叶片和鞘之间，在姜属里为垫状；叶片近圆形或者披针形，或狭带形，在芽期卷曲，无毛或有毛，中脉显著，侧脉通常多数，羽状，平行，边缘全缘。

Secondary veins 10–14 on each side of midvein, straight and nearly parallel; inflorescences umbelate, 2- or 3-flowered; pedicel 1–2 cm; sepals nearly as long as hypanthium, apically laxly serrate.

次脉10-14在中脉两边各，直接和近平行；花序umbelate，2或3花；花梗1-2厘米；萼片近等长托杯，顶部稀松的有锯齿。 27 C。 subhirtella 大叶旱樱

Leaves petiolate; leaf blade usually papery, secondary veins 2-4 on each side of midvein, tertiary veins parallel.

叶具叶柄纸质的叶片通常，次脉2-4在中脉两边各，平行的第三脉。

Leaves alternate, pinnately veined, with strongly parallel secondary veins, base often asymmetrical, margin entire.

叶互生，成羽状脉，具强烈平行次脉，不对称的基部通常，边缘全缘。

Lenticels dense, conspicuous on branches; leaves with slightly raised parallel cross-bars on veinlets; flowers white.

在分部浓，显眼的皮孔；在细脉上的叶具稍突起平行的横脉；花白色 13 A。 callosa 硬齿猕猴桃

Lenticels sparse, inconspicuous on branches; leaves with strongly raised parallel cross-bars on veinlets; flowers reddish.

在分部稀少，不显眼的皮孔；叶具强烈在细脉上提高平行的横脉；花带红色。 12 A。 ulmifolia 榆叶猕猴桃

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。