三裂的

The results showed that the pollen grains of wild Rosa rugosa were prolate or perprolate, and their equatarial view was long ellipse, long ellipse leaning toward rectangle or ellipse leaning toward spindle and the polar view was 3-labed-rounded, the two poles were plane or embowed. They all had 3-colposates which annularly distributed in equal space, and the pollens belonged to N3P4C5 model.

结果表明：野生玫瑰的花粉粒为长球形或超长球形，赤道面观长椭圆形、长椭圆形偏矩形或椭圆形偏纺锤形，极面观三裂圆形，两极平截形或圆弧形，具三孔沟，以等间距环状分布，属于N3P4C5型花粉。

Leaf blade 1–3-pinnate or pinnately decompound, rarely ternately dissected or simple and undivided.

叶片1-3回羽状或羽状多回复出，很少三出的多裂的或单的和不裂的。

Pollen grains subspheric to prolate, trilobate-circular in cross section.

花粉粒近球形到长球形，圆三裂的在横断面上。

Pollen morphology of six species were similar, all trisected circular shape in polar view, tricolporate. Observed under LM the ornamentation of exine is granular with spinules arranged sparsely and under SEM the basal part of spinule extend.

六种沙蒿的花粉较为相似，极面观均为三裂圆形，三孔沟，孔横长，外壁纹饰在光镜下表面颗粒状，在电镜下为排列较疏的刺，刺基外延。

Leaf blades suborbicular, 3–5-veined, base rounded to subcordate, rarely cuneate, margin with a few crenate teeth above middle, apex usually 3-lobed.

近圆形的叶片，3-5－脉，基部圆形到近心形，很少楔形，边缘具一些齿在中部以上，3浅裂的先端通常。 38 S。 trilobata 三裂绣线菊

Objective: To compare the advantages between transcallosal transchoroidal approach and the transfrontal transchoroidal approach, and to provide microsurgical anatomy to neurosurgeons of how properly to treat the lesions involving the third ventricle via the transchoroidal approach.

目的：比较经胼胝体和经额中回两种途径达到脉络裂的优劣，为临床医师经脉络裂入路治疗第三脑室病变提供理论基础。

In the center, the three prominent dust lanes that give the Trifid its name all come together.

在星云中央，三道巨大的尘埃暗带会聚在一起，使这个星云以三裂星云为名。

The Trifid, also known as M20, is only about 300,000 years old, making it among the youngest emission nebulae known.

三裂星云又名M20，年龄大约是三十万年，是已知最年轻的发射星云之一。

Caption:: The Trifid nebula (Messier 20), named after its three-lobed appearance caused by dusy lanes crossing its bright core, is a combination of an emission nebula and a reflection nebula.

这是位於人马座的三叶星云，又名三裂星云和 M20，这个名源自它的外观，好像由三块不同的东西所构成似的。

During the fracturing for low pressure and low permeability gas reservoirs, there are some main problems in conventional hydroxypropylguar - organic boron cross-linking system: Firstly, the water-lock damage to low pressure and low permeability gas formations by filter liquor; Secondly, the reason for alkali-sensitive damage in alkali-sensitive reservoirs is that conventional hydroxypropylguar - organic boron cross-linking fracturing fluids were cross-linked under alkaline environment, while the permeability of reservoirs is reduced greatly; Thirdly, the formation pressure is low, and the energy of flow back is not enough, at present, the main measure in oil fields is "injecting with liquid nitrogen", but this technique increased the cost of fracturing, making great troubles in operating, and leaving the liquid nitrogen also is a big problem.

在低压低渗透气藏的压裂改造过程中，常规羟丙基胍胶-有机硼交联压裂液体系存在的主要问题，一是压裂液滤液对低压低渗透气层造成的水锁损害；二是常规羟丙基胍胶-有机硼压裂液是在碱性条件下交联的，对碱敏性储层造成碱敏损害，降低储层渗流能力；三是地层压力低，压裂液返排能量不足，当前各油田采取的措施主要是&液氮伴注&技术，但是&液氮伴注&技术增加了压裂的费用，而且液氮存放也存在较大问题。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷