短头的

This paper studies the main geometrical parameter such as angle, height, width, stagger and the upper width in dentation and trapezoid flow path, firstly, uses the single-phase numerical simulation of the computational fluid dynamics technique to analyse the influence of different geometrical parameter on discharge coefficient and flow state exponent of drip emitter. Secondly, uses the two-phases numerical simulation of CFD (1% sand content ) to analyse the influence of the above mentioned geometrical parameter on the contribution regulation of sand and anti-clogging performance. Thirdly, uses the PIV （ particle Tracking Velocimetry ） technique which can see the small-scale flow path to observe and test the trajectories and velocities of solid particles in labyrinth flow path, and analyses the basic factors which can influence the movement characteristic of solid particles and the flow state in flow path.

本文以齿形流道、梯形流道为主要研究对象，以流道转角、流道高，流道宽、偏差量及梯形流道上底宽为主要结构参数，首先应用 CFD 单相流数值模拟技术对不同结构参数灌水器流道水力性能进行模拟，分析了不同结构参数对流态指数和流量系数的影响，其次，应用 CFD 两相流（含沙量为1%）数值模拟技术分析了结构参数对含沙量分布规律和抗堵塞性能的影响，然后，应用 PIV 可视化测试方法测试了固体颗粒在流道内运行轨迹及速度，分析了影响固体颗粒运动特性及流道内流体流态的基本因素，最后，对上述流道结构形式通过模具加工及滴灌带试制，进行了标准化测试（ GB/T 17187-1997 农业灌溉设备滴头技术规范和试验方法与 ISO 标准 ISO /TC23 /SC18 /WG5N4短周期堵塞测试程序），测试结果验证了 CFD 模拟结果，并提出了迷宫结构流道灌水器的抗堵塞设计方法。

They were dressed in a quaint outlandish fashion; some wore short doublets, others jerkins, with long knives in their belts, and most of them had enormous breeches, of similar style with that of the guide's.

他们身着古色古香稀奇古怪的方式，有的身穿短双峰，其他jerkins在裤头长刀，其中大部分类似风格的巨大马裤，与该指南的的。

Results The representation of the structures of ill ears on CTVE and its comparison with coronal and axial CT film and operation: In 24 purulent otitis media, CTVE had a coincidence of 91.7% with operation of handle of malleus, 95.8% of head of malleus,95.8% of long limb of incus ,100% of short limb of incus, 87.5% of limbs of stapes.

结果：24耳慢性化脓性中耳炎中CTVE显示锤骨柄、砧骨长脚骨质破坏与手术所见的符合率为91.7％（22/24），显示锤骨头骨质破坏的符合率为95.8％（23/24），显示砧骨短脚骨质破坏的符合率为100%（24/24），显示镫骨脚骨质破坏的符合率为87.5％（21/24）。

The force equilibrious equation and the approximate plastic conditions are set up,solved using the boundary condition and the strenth static coefficient σ/σs of fixed cycles short core when the tube is drawn so calculating the drawing force at every pass.

建立近似的力平衡方程，近似的塑性条件。应用边界条件联解上述方程，求出固定圆柱形短芯头拔管时的应力状态系数σ_拉/σ_S，以计算各道次的拔制力。

Fruit tardily dehiscent siliques opening basipetally, not breaking transversely into segments, linear or oblong, terete, sessile; valves corky, not veined, with glandular and/or dendritic trichomes, not torulose or moniliform; replum flattened; septum complete, thickened; style prominent, short, or obsolete; stigma capitate or linear, obscurely to strongly 2-lobed, lobes spreading, free, not decurrent.

果缓慢开裂长角果开阔的basipetally，不进裂片横向弄断，线形或长圆形，圆柱状，无梗；不，裂爿木栓质具腺的脉，具和/或毛状体，并非近念珠状或念珠状；使变平的假隔膜；隔膜完全，加厚；突出的花柱，短，或废退；柱头头状或线形，不明显对强烈2裂，裂片平展，离生，不下延。

Female flowers in various capitula or panicles; tube of perianth 3-toothed, calyxlike, adnate to ovary; style very short or absent.

在各种各样的头状的或圆锥花序里的雌花；花被具3齿的筒部，萼片状，贴生于子房；花柱非常短或无。

The Chinese Clivias are noted for their short, bright, broad, rigid, thick, rounded tip leaves shaped like a folding fan.

中国君子兰之所以著名，主要缘于其独特的短亮宽厚硬刚性极强头型圆润的极具观赏性的叶片，还有那&立似美人扇、散如凤开屏&的端庄温雅的外型。

In those first days, when he occasionally found himself in a clearing and could walk unencumbered for a short while, the sound of his own footfalls drumming on the loose-packed soil made him feel exposed.

在头几天，偶尔之中，他走到了一处空旷的地方，这时，他可以不受一点阻碍地走上一会儿，虽然时间很短，但是他听到自己的脚步声，敲击在松散地堆积着的泥土上，使他觉得，自己的行藏暴*露*了。

Most sloths are about the size of a small dog and they have short, flat flat heads.

大多数的三趾树獭是有关小的狗大小的事，而且他们有短，平坦的公寓头。

Ikopi are fleet-footed ungulates native to the swamps and forests of Naboo. The sturdy-legged animals have golden coats of short fur, and grow a crown of twisting antlers.

伊库皮是原生於那卜沼泽丛林的飞毛腿有蹄类动物，这种双腿健壮的动物有著金黄色的短皮毛，头上长著弯曲的多叉鹿角。

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。