查询词典 veins

The display rate was 100% for peri-pancreatic big veins, including splenic vein, superior mesenteric vein, and portal vein; 85.3% and 77.3% for small veins of pancreatic head, including ante-superior pancreaticoduodenal vein, gasticocolonal trunk and its branches.

对胰腺周围大静脉（脾静脉，肠系膜上静脉，门静脉主干）的显示率为100%；胰头部小静脉（胰十二指肠上前静脉，胃结肠干及其属支）的显示率为85.3%和77.3%。

Leaves paripinnate, alternate, 25-40 cm with petioles; axis and petioles grayish yellow tomentose; leaflets usually 4 pairs, opposite; petiolules 3-4 mm, densely tomentose; blades adaxially deep green, oblong or ovate-oblong, 13-30 × 5-11 cm, papery, abaxially sparsely tomentose along midveins and lateral veins, adaxially sparsely tomentose along midveins, or glabrous on both sides, lateral veins 17-22 pairs, prominent on both sides when dry, base slightly cordate, margin entire, apex caudate-acuminate. Inflorescence racemose or thyrsoid, on stems and old branches, 1.5-4 cm, densely grayish yellow to grayish brown pubescent.

偶数羽状的叶子，互生，25-40厘米叶柄；轴和叶柄淡灰黄色被绒毛；通常的小叶4 对，对生；小叶柄3-4毫米，密被绒毛；叶片正面深的绿色，长圆形或卵形长圆形， 13-30 * 5-11 厘米，纸质，沿着中脉和侧脉被绒毛的背面稀疏，正面沿着中脉的稀疏绒毛，花序总状或聚伞圆锥状的，在茎和老枝上生，1.5-4厘米，密被淡灰黄色到淡灰棕色短柔毛。

Firstly, the high resolution pictures of dragonfly wings from sample tests were studied thoroughly, and the unique feature of the reticulate vein distribution and the variation of the vein sizes and the grid shapes in different zones were figured out;then several computational models based on a dragonfly wing were established by using ANSYS, and beam 189 and shell 93 elements were used respectively in modeling of the veins and the membrane so as to ensure the compatibility between the veins and the membrane at a deformed state;these models subject to uniform loading cases were analyzed respectively so as to explore the unique performances of the wing structure, furthermore, through eigenvalue spectrum analyses of these models, the special role of the pterostigma in eliminating or suppressing the wing quivering effect was also evaluated.

首先，对实验中获取的高清晰度的蜻蜓翅膀数码图片进行了细致地分析，找出了翅膀网状翅脉结构中翅脉的分布规律与尺寸变化、网格形状的差异及不同形状网格的分布等独特的结构特征；再利用ANSYS建立蜻蜒翅膀网状翅脉结构模型，采用三节点等参数梁元beam189模拟翅脉和八节点等参数曲壳单元shell93模拟翅膜，以满足翅脉和翅膜间的变形协调性要求；通过非线性数值分析，探索了蜻蜓翅膀网状翅脉结构在均布荷载作用下所具有的独特的结构性能；通过模态分析，揭示了翅膀前缘靠近翼尖附近的翅痣在翅膀消震减振中所发挥的作用。

Leaves opposite, petiolate, leathery, usually with inconspicuous, translucent glands; secondary veins many, slender; tertiary veins scalariform, not prominent.

叶对生，具叶柄，革质，通常具不明显，半透明的腺体；次脉很多，纤细；第三脉梯状，不突出。

Stipules caducous, small; leaf blade thinly leathery; lateral veins pinnate; tertiary veins scalariform , margin entire. Flowers sessile or shortly pedicellate, in lax panicles of unilateral racemes; bracts early caducuous, linear.

托叶早落，小；叶片薄革质；侧脉羽状；第三脉梯状，边缘全缘花无梗或有短花梗，在疏松单侧的总状花序圆锥花序里；苞片早落，线形。

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。

Petiole 8-20 cm, glabrous; leaf blade 5-7-foliolate; leaflets sessile, abaxially green, oblanceolate, 10-25 × 5-12 cm, abaxially glabrous or with sparse whitish hairs, ferruginous tomentose at base and in axils of lateral veins, base cuneate, margin crenate-serrate with teeth crenulate-serrulate, apex acuminate to subcaudate; lateral veins in 18-25 pairs.

叶柄8-20厘米，无毛；叶片5-7具小叶；小叶无柄，背面绿色，倒披针形， 10-25 * 5-12 厘米，背面无毛或者有稀少带白色毛的，被锈色绒毛在基部和在侧脉腋处，基部楔形，边圆齿状锯齿具细圆齿到细锯齿的牙齿，18-25对的侧脉。

Stipules gradually deciduous, triangular, 1-2 mm, membranous; petiole often unequal in length, 0.5-7 cm; leaf blade dark green or green blue, ovate, lanceolate, or obovate-oblong, asymmetric, unequal or equal in size, 1-15 × 0.6-5 cm, thinly papery or submembranous, 3(or 5)-veined, lateral veins many, irregularly reticulate, external secondary veins anastomosing by margin, sometimes inconspicuous, cystoliths finely fusiform, conspicuous adaxially, base obliquely rounded or subcordate, sometimes cuneate, margin entire or sometimes undulate, apex shortly or long caudate-acuminate. Inflorescences solitary; male inflorescence a cymose panicle or racemelike, often longer than leaves; female cymes as long as or shorter than leaves, pedunculate.

逐渐落叶，三角形的托叶，1-2毫米，膜；叶柄通常不等长，0.5-7厘米；蓝色的深绿色的叶片或绿色，卵形，，或倒卵形长圆形，不对称，不等长或大小相等， 1-15 * 0.6-5 厘米，薄纸质的或近膜质， 3(或5)脉，侧脉很多，不规则网状，外部次脉网结的在边缘，有时不明显花序单生；雄花序一总状花序状的密伞圆锥花序或，通常长于叶；雌性聚伞花序等长或短于叶，有花序梗。

An increase in the blood flow velocity of internal jugular vein,the abnormal acoustic frequency and its spectrum of TCD were signs indicated that the blood stream of CCF were drained by the superior and/or inferior petrous sinuses.TCD could detect the superficial sylvian vein where the blood flow velocity increased when the cortical veins were the main veins draining CCFs.

异常眼静脉搏动征，血流反向是诊断CCF眼上静脉引流的可靠指标；颈内静脉流速增高，声频及频谱异常是CCF血流经岩上窦、岩下窦引流的征象；当以皮层静脉引流为主时，颅内常可检出流速增高的侧裂静脉。

The literature on autopsy studies states no apparent tendency toward these venous channels, and brain stem veins and telencephalic veins are equally affected, although there is a clear-cut predominance of lesions in the brain stem.

尽管脑干部位的小静脉的确最容易受累，但以往的研究文献不但没有发现脑干部位的小静脉管腔特别容易受累，反而认为脑干部位的静脉和端脑部位的静脉受累的几率相同。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。