中脉

Leaflet blades papery, pilose along lower portion of midvein on adaxial surface.

沿着在正面上中脉的更低的部分纸质，具柔毛的小叶叶片。

The midrib-bundl es have be found with follow possible evolutionary trends: amphicribral bundle- almost-amphicriral bundle collateral bundle.

讨论 了中脉维管束类型可能的演化趋势：周韧维管束→近周韧维管束→下韧维管束。

According to the arra ngem ent of phloem and xylem, shape of xylem and the Arranging way of xylem rays, the midrib-bundles were divided into five forms :(1) amphicribral round bundle;(2 ) pinnate-ray amphicribral reniform bundle;(3) fan-ray amphicribral reniform b undle;(4) almost-amphicribral bundle;(5) collateral bundle.

根据中脉维管束结构特点：木质部与韧皮部的位置，木质部的形状，木射线排列的方式，可分为5个类型：（1）圆形周韧维管束；（2）羽线肾形周韧维管束；（3）扇线肾形周韧维管束；（4）近周韧维管束；（5）下韧维管束。

Plants sparsely to densely pilose at least along midvein and leaf margin; uppermost leaves auriculate or amplexicaul at base; fruit (8-)12-20(-25) mm

对密被柔毛至少沿中脉和叶缘种植疏生；最上部的叶耳形或抱茎的在基部；结果实(8-)12-20(-25)毫米 3 E。

Cauline leaves sessile, auriculate, sagittate, or amplexicaul, rarely rounded at base; fruit valves often with a prominent midvein.

无柄的茎生叶，耳形，箭头形，或者抱茎，很少圆形在基部；果裂爿经常具一突出中脉。

Fruit dehiscent siliques or rarely silicles, linear or rarely oblong, terete, 4-angled, latiseptate, or angustiseptate, sessile or rarely shortly stipitate; valves with an obscure to prominent midvein, pubescent on outside, rarely also on inside, keeled or not, smooth or torulose; replum rounded; septum complete, membranous, translucent or opaque, veinless; style obsolete or short, rarely half as long as or subequaling fruit, often pubescent; stigma capitate, entire or 2-lobed.

开裂的果长角果或很少短角果，线形或很少长圆形，，四棱形，具宽隔膜，果实狭隔的或，无梗或很少具短柄；裂爿具一不明显对突出中脉，短柔毛在外面上，在里面也很少，与否龙骨状，近念珠状的平滑或；假隔膜绕行；完全，膜的隔膜，不透明的半透明或，；废退的花柱或短，或的一半很少果，通常短柔毛；柱头头状，全缘的或2裂。

Fruit dehiscent siliques or silicles, linear, oblong, ovoid, obovoid, ellipsoid, or lanceolate, terete or slightly 4-angled, sometimes angustiseptate; valves with a prominent midvein, smooth; replum rounded; septum complete or perforated; style absent or short and to 1.5 mm; stigma capitate, entire.

果开裂长角果或短角果，线形，长圆形，卵球形，，椭圆形，或披针形，四棱形，有时果实狭隔的圆柱状或稍；裂爿具突出中脉，滤波；假隔膜绕行；隔膜完全的或具孔；花柱无的或短和对1.5毫米；柱头头状，全缘。

Awn In grass flowers, a stiff bristlelike structure formed from a continuation of the central nerves of the LEMMAS or GLUMES.

awn 芒：禾本科植物小花的外稃顶端或背部，由中脉延伸而成的针状突起。芒的有无和形状，可为鉴定部分禾本科植物物品种的依据。

As the deficiency is getting more severe larger leaf areas become chlorotic, leaving only a narrow area along the midrib green.

随者缺钾渐次加重，大部分叶面褪绿，只留下沿中脉的一个狭窄部分保持着绿色。

Leaves basal and cauline; leaf sheaths glabrous or pilose; leaf blades linear, flat, 18–75 × 0.3–2(–4) cm, glabrous, glaucous or pilose, midrib prominent, margins scabrid or smooth, base tapering or broad and rounded, apex acuminate; ligule 0.5–4 mm, ciliolate.

叶基生和茎生叶鞘无毛或具柔毛；叶片线形，平， 18-75 * 0.3-2(-4)厘米，无毛，有白霜或具柔毛，突出的中脉，边缘粗糙或平滑，宽和圆形的基部渐狭或，先端渐尖；叶舌0.5-4毫米，具短缘毛。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。