无叶的

Leaves alternate , usually entire; stipules present, reduced and/or deciduous; bracteoles 2, at or near base of ovary, or absent.

叶互生 ，通常全缘；存在的托叶，退化和/或脱落；小苞片2，在或者近子房基部，或无。

Leaves often on upper stems or branches, glabrous; stipules deciduous, ovate, very small; petiole 1.5-12 mm; leaf blade narrowly oblong, elliptic, or oblanceolate to oblong-lanceolate, 8-20 × 2.2-4.5 cm, membranous or herbaceous, lateral veins 5-8 pairs, base attenuate or narrowly cuneate, margin crenate-serrate or undulate distally, apex acuminate; cystoliths slightly conspicuous or inconspicuous.

叶通常在上面茎或分枝上，无毛；托叶脱落，卵形，很小；叶柄1.5-12毫米；叶片狭长圆形，椭圆形，或倒披针形到长圆状披针形， 8-20 * 2.2-4.5 上部的厘米，膜质或草质，侧脉5-8 对，基部渐狭或狭楔形，边缘具圆齿有锯齿或波状，先端渐尖；钟乳体稍明显或不明显。

The coarse flavone is extracted from luohanguo leaves by boiling water, collected by resin adsorption, elutriated by 75% ethanol. The refined flavone is obtained by absolute alcohol purification.

罗汉果叶通过蒸馏水煮沸，经大孔吸附树脂柱吸附，75%的乙醇洗脱，旋干，得罗汉果叶子粗黄酮，再用无水酒精精制，得精制黄酮。

It is abundant to develop, utilize the leaf of ginsengs to have resources, It have much merits such as safe and convenient, without residue, and contain many kinds of active composition. Feed the animal directly as the additive, It can prevented disease and urge to grow role.

因此开发、利用人参叶具有资源丰富，安全方便，无残留等优点，且含有多种活性成分，具有营养与保健的双重功能，作为添加剂直接饲喂动物，起到防病促生长作用。

The length changes of guard cells in flag leaves from 16 wheat genotypes with and without irrigation were observed.

观察来源于16个小麦基因型在有、无灌溉条件下，旗叶保卫细胞长度的变化。

Leaves 3, in a terminal whorl, sessile or shortly petiolate, rhombic-orbicular to ovate, with 3 or 5 main veins and anastomosing veinlets.

叶3，在一顶生轮生，无梗或具短叶柄，菱形圆形到卵形，具3或5主脉和网结的细脉。

Can improve the survival ratio of seeding. Culturing in hormone media can make meristem tip survive once time, and the result is better than two-time-cultivation.3、The meristem tip with two phyllomes(0.3-0.4mm in size)were found to suitable for virus-free seeding culture that were cut from aseptic seeding, which led to higher survival and virus-free ratio, up to 72.1%and 54.2%.

在培养基中添加椰汁、香蕉汁等有机添加物可以明显提高成苗率。3、采用二次剥离茎尖的方法，从无菌试管苗上切取带2个叶原基(大小0.3-0.4mm)茎尖分生组织培养，成苗率为72.1%，脱毒率为54.2%。

Leaves 7-25 cm; petiole 2-8 cm; leaflets (3-)5-13; petiolules 1-2.5 mm; leaflet blades ovate to elliptic, 3-8 × 1.5-4.5 cm, abaxially pubescent to nearly glabrous, base obliquely rounded, apex acute to acuminate.

叶7-25厘米；叶柄2-8厘米；小叶(3-)5-13；小叶柄1-2.5毫米；小叶叶片卵形到椭圆形， 3-8 * 1.5-4.5 厘米，对近无毛，基部斜圆形，先端锐尖或渐尖的背面具短柔毛。

Leaves ovate or triangular-ovate, abaxially glabrous or hairy; perianth green or yellow-white.

叶卵形的或三角状卵形，背面无毛或有毛；花被绿色或黄色白色。

The recombinant plasmid pBI121-VP6 was transformed into Agrobacterium tumefaciens strainLBA4404 by freeze-thawing method and the introduced into the sterile tube culture shoot of tobacco NC89 and baoding alfalfa by leaf disc infection method.

以冻融法将pBI121-VP6重组质粒导入根癌衣杆菌LBA4404，用叶盘法转化于NC89烟草和保定紫花苜蓿的无菌试管苗。

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。