叶的

To determine the best sampling time of ipomoea lam leaves as well as the value of their resources, dynamic changes in the content of chlorogenic acid from ipomoea lam leaves in different periods and its ability of scavenging free radicals were studied.

摘 要：研究甘薯叶中绿原酸的动态变化规律以及其清除自由基的能力，从而确定甘薯叶最佳采样时期以及甘薯叶的资源价值。

The mortality and control effect are all over 99% after 7d,15d and 30d respectively, a small number of trees were infected coconut leaf beetle again after 90d and 120d respectively, most trees were found eggs and pupas after 150d , and the control effect had a slight decline, but will not cause a substantive impact on growth of center coconut leaves.

施药后第7天、15天、30天和60天害虫虫口减退率和防效均大于99%，第90天和120天个别植株重新感染少量的椰心叶甲成虫和幼虫，第150天后有一半以上的植株感染椰心叶甲成虫和幼虫，其中个别植株已经产生卵和蛹，防效产生轻微下降，但不会对椰树心叶的生长造成实质性的影响。

The upper and lower epidermal in the yellow leaf of Celtis julianae 'Aurea' had almost no chloroplast, but after reverting green the chloroplast appeared and the number of the chloroplast, starch grains increased and plastoglobulus reduced.

金叶珊瑚朴黄色叶的上下表皮细胞中几乎不含叶绿体，但转绿后的叶片中上下表皮叶绿体的数目增多，故叶色变绿。叶色由黄转绿过程中，淀粉粒增多，体积变大，嗜锇小球减少。

Lateral branches penetrating leaf sheaths. Leaves alternate. Inflorescences borne at each node, opposite leaves, emerging from mouth of leaf sheath, each a large panicle of numerous cincinni; cincinni each subtended by an involucral bract; bracts similar to leaves, becoming smaller toward apex of cincinnus.

叶互生 花序着生在每节，与叶对生，从叶鞘口那里出现，每一个为一大的多数蝎尾状聚伞花序的圆锥花序；蝎尾状聚伞花序各自以一总苞片被包着；类似于叶的苞片，向蝎尾状聚伞花序先端变小。

Pinnately compound with a single terminal leaflet, as in the leaves of the rose plant.

奇数羽状叶的与顶端羽状单叶接合的，如蔷薇科植物的叶

Leaves alternate; stipules lanceolate, 4-8 mm; petiole 2-11(-13) cm, pubescent or glabrous; leaf blade ovate, elliptic, oblong or subelliptic,(5-)9-21 × 2.5-10 cm, papery, slightly rough, secondary veins 3 or 4 pairs along midvein, abaxial surface strigillose or pubescent on veins, rarely glabrous, adaxial surface sparsely appressed strigillose or glabrous, base broadly cuneate, rounded, or obtuse, margin denticulate, apex acuminate or caudate-acuminate. Glomerules usually unisexual, sometimes bisexual, in the axils of current and fallen leaves along normal leafy stems, 4-10 mm in diam.; male ones on proximal part of flower-bearing branches; female ones on distal part.

叶互生 托叶披针形，4-8毫米；叶柄2-11(-13)厘米，被短柔毛或无毛；叶片卵形，椭圆形，长方形或，( 5-)9-21 * 2.5-10 厘米，纸质，粗糙的稍，次脉3或4 对沿中脉，背面具短糙伏毛的或短柔毛在脉上，很少无毛，正面疏生贴伏具短糙伏毛的或无毛，通常单性的团伞花序，有时两性，在正常生叶的茎的叶和脱落叶的腋内，直径4-10毫米；在忍受花的分枝的下部上的雄性的；在上部上的雌性的。

In addition,during the investigation of cadmium different levels distribution in Typha angustifolia Linn,we find that:l as far as the accumulate ability of different organ in Typha angustifolia Linn are concerned,root sheath leaf.

此外对狭叶香蒲体内镉的化学形态分析表明根和叶中均以氯化钠提取态最高，但在根中以去离子水和乙醇提取态存在的镉含量总和大于氯化钠提取态，表明镉在根与叶的化学存在形态有所不同。

Studies on the Technology of Path Planning in Automatic Grinding and Polishing Die and Mould with Free-form Surfaces;2. The grinding machine controller controlled by computer directly for the repairing hydraulic turˉbine guide vane was designed.

针对水轮机活动导叶的修复问题，设计了微机直接控制的水轮机活动导叶打磨用机械手控制器，它可控制五个自由度，方便地修复各种形状复杂的活动导叶。

Basal leaf blade ovate-cordate, base cordate; cauline leaf borne near apex of stem, much smaller than basal leaves; petals yellowish

卵状心形的基生叶，基部心形；忍受的茎生叶干，非常小于基生叶的近先端；花瓣淡黄 7 P。

Staminodes thin and long; basal leaf blade ovate-triangular, base attenuate; cauline leaf borne near base of stem, slightly smaller than or subequaling basal leaves; petals white

退化雄蕊薄和长；卵状三角形的基生叶，基部渐狭；忍受的茎生叶干，稍微小于或者近相等基生叶的近基部；花瓣白色 8 P。 humilis 矮小梅花草

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。