尖部

Leaves opposite; petiole 4-7 mm; leaf blade elliptic to obovate, 3-8 × 1-4 cm, leathery, pubescent when young but glabrescent and shiny with age, abaxially gray tomentose, secondary veins 1 on each side of midvein, originating near leaf blade base, and meeting at apex, tertiary veins 4-6 on each side of midvein and connecting midvein to secondary veins, reticulate veins obvious, intramarginal veins 3-4 mm from margin, base broadly cuneate, apex rounded to obtuse and often slightly emarginate or sometimes slightly apiculate.

叶对生 叶柄4-7毫米；叶片椭圆形到倒卵形， 3-8 * 1-4 厘米，革质，幼时具短柔毛但老时脱落无毛和发亮的，背面灰色被绒毛，次脉在中脉两边各1，近叶片基部发出，在先端会集，第三脉在中脉两边各4-6和连结中脉和次脉，网脉明显，近边缘内脉距边缘3-4毫米，基部宽楔形，先端圆形到钝和通常稍微凹或有时稍具细尖。

Petiole of basal and lower cauline leaves (1-)2-5(-8) cm, considerably flattened at base; leaf blade oblong-oblanceolate in outline, appearing pinnately compound,(0.5-)5-15(-22) cm, sparsely to densely pubescent; lateral lobes 7-13 on each side of rachis, broadly ovate, oblong, or linear,(0.5-)1-2.5(-4.6)× 0.1-1(-2) cm, base decurrent, margin entire, irregularly serrate, or laciniate, apex acute or obtuse.

叶柄的基部和下部茎生叶(1-)2-5(-8)厘米，相当大扁平在基部；轮廓长圆形倒披针形的叶片，出现羽状复叶，(0.5-)厘米，疏生兑一密被短柔毛5-15(-22)；在轴的每边的侧面裂片7-13，宽卵形，长圆形，或线形，( 0.5-)1-2.5(-4.6)* 0.1-1(-2)厘米，基部下延，边缘全缘，不规则有锯齿，或条裂，先端锐尖的或钝。

Stamens 5, alternate petals and adnate at base of petals; filaments flat, abruptly contracted upward; anthers ellipsoid, base 2-lobed; connective extended into an acute mucro.

雄蕊5，花瓣的与花瓣互生和贴生的在基部；花丝平，突然收缩向上；花药椭圆形，基部2裂；药隔延伸为一锐尖的短尖头。

Basal and lowermost cauline leaves compound, 5-9-foliolate; petiole (3-)8-15(-20) cm; leaflets broadly oblong, ovate, or lanceolate,(2-)4-7(-10)×(1-)2-3(-4) cm, base oblique, cuneate, or subtruncate, margin coarsely serrate with a distinct mucro at tooth apex, apex obtusely acuminate with a distinct mucro; petiolule 1-5(-20) mm. Upper cauline leaves 3- or 5-foliolate, becoming gradually smaller and narrower upward.

基部和最下的茎生叶复合，5-9具小叶；叶柄(3-)8-15(-20)厘米；小叶宽长圆形，卵形，或披针形，( 2-)4-7(-10)*(1-)2-3(-4)厘米，基部偏斜，楔形，或近截形，有粗锯齿的边缘具离生短尖头钝在齿先端，先端时候渐尖具离生短尖头；小叶柄1-5(-20)上面的毫米茎生叶3-或者具5小叶，向上变得逐渐更小和更狭窄。

There are the following several points different from existing finite element eigenanalysis methods for asymptotic fields near the crack tip:(1)The jump-off that educes the formula is different.(2)The form of the element is a ad hoc element.(3)The singular transformation technique is not used in the assumption of displacement fields surrounding the wedge tip.

该方法与过去原有求解裂纹端部近似场的有限元特征分析方法有几点不同：(1)导出公式的出发点不同；(2)单元形式为高次内插单元；(3)尖劈端部邻域内的位移场假定没有采用奇异变换技术。

Spikelets 2.8–5(–7)× 1.5–2.3 mm, greenish yellow tinged light purple, florets 12–18, closely overlapping, disarticulating from base upward; rachilla persistent; glumes unequal, lower glume 0.5–1 mm, upper glume 0.75–1.4 mm, both acute; lemmas 1.1–1.5 mm, lateral veins faint, apex subacute.

小穗 2.8-5(-7)* 1.5-2.3 毫米，黄绿色微染浅紫色，小花12-18，接近重叠，向上的脱节的自基部；小穗轴持久；颖片不等长，低的颖片0.5-1毫米，上面颖片0.75-1.4毫米，都锐尖；外稃1.1-1.5毫米，侧脉昏倒，先端近尖。

The results showed that the rooting rate reached 83.2%~96.3% in 1/2 MS medium with IBA1.0~1.5 mg/L, The rooting rate of stem with top was significantly higher than that of stem without top; Snicking in stem base increased root number obviously, The appropriate substratum for transplanting was perlite and soil (1:1), The growth tendency of transplanting plantlets in May was slow-fast-slow.

结果表明：采用1/2MS培养基添加IBA1.0~1.5 mg/L，生根效果最好，平均生根率达83.2%~96.3%；带茎尖茎段的生根率显著高于不带茎尖茎段；茎段基部刻伤处理后较对照生根量明显增加；酸枣带根组培苗适宜的移栽基质为1：1的珍珠岩和土；5月份移栽下地的组培苗，其生长呈现慢-快-慢的趋势。

Leaves with base cordate-amplexicaul, apex acute to acuminate; leaf blade elliptic-ovate to broadly ovate.

抱茎叶具基部心形，先端锐尖或渐尖；叶片椭圆状卵形的到宽卵形。 6 H。 prattii 大叶金丝桃

Inverted ovate or elliptic leaf-shaped oval, 10-18 cm long, 4-10 cm wide, the top emergency or become sharp tip, base of the wedge, back along the vein has pubescens.

叶倒卵形或椭圆状卵形，长10—18厘米，宽4—10厘米，顶端急尖或渐尖，基部楔形，背面沿脉有柔毛。

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。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐