孔口

A piston-shaped valve needle is contained in the bore in a longitudinally sliding fashion and has an essentially conical valve sealing surface by means of which the valve needle cooperates with the valve seat in order to control the at least one injection opening.

一个活塞状的阀针(5)可纵向移动地设置在孔(3)中并具有一个基本上锥形的阀密封面(7)，阀针(5)通过该阀密封面与阀座(9)相配合，以控制至少一个喷射口(11)。

Results:The 2 male crania were dated back to the Donghan epoch. Their sex and age were determined based on morphology, The morphological observation and craniometry showed that the crania in Niya were dolichocrany, orthocrany, leptorrhine.

结果：新疆和田民乐县尼雅遗址墓葬出土颅骨的特点是：颅形卵圆形、长颅、正颅、狭颅，眶口前倾、中眶型，梨状孔下缘锐，狭鼻型，面部较突出，颧上颌角较小，犬齿窝深，鼻前棘中等。

The hospital can make very difficult operations such as resection of hepatic lobes, ablation of encephaloma, radiofrequency catheter ablation of preexcitation syndrome with atrical-ventricular tachycardia, installation and monitoring of permanent artificial pacemaker, artificial joint replacement of femoral necrosis, total hip revision arthro-replacement, posterior vitrectomy combined with autologous serum blocking macular hole, mouth floor jow and neck combined radical operation of oral carcinoma etc..

医院能开展肝叶切除术、脑瘤摘除术、射频消融治疗综合症合并室上性心动过速、永久性人工心脏起搏器安装与监测、股骨坏死人工关节置换术，全髋翻修置换术、后段玻璃体切除术、气液交换术、自身血清封闭黄斑裂孔，口腔癌口底颌劲联系根治术等高难度手术。

The computation results agree with the experiment results very well. The muzzle flow field of an artillery with a muzzle brake is also simulated. The main characteristics and the mutual relations of shock waves in the muzzle flow field are obtained by the simulation. On the basis of the simulation results, the influences of the brake holes on the muzzle brake capabilities are analyzed.

对某口径火炮带有制退器的膛口流场进行了数值模拟，其结果反映了制退器内外流场的主要特征和冲击波波系之间的相互作用，在数值模拟的基础上分析了3排侧孔对制退器性能的影响。

Furthermore,because the interior and exterior characters of fora-miniferal apertures are becoming more and more important in the classification of foraminifera,we should pay more attention to the free specimen s from Paleozoic foraminiferal stu.

另外由于口孔的内部和外部特征在分类学中的地位越来越重要，所以通过实体化石来研究古生代有孔虫理应受到更多的重视。

As a result, the ratio of the inner-and out-apertures of bordered pits in tracheid, gymnosperm, was 3: 1, in tracheary elements of rattan and bamboo, 1: 1. Other parameters among these plants were various.

结果表明：裸子植物管胞和竹、藤管状分子具缘纹孔的内、外口比例分别约为3：1和1：1，其它各项结构参数均存在较大差别。

Because explosive shape is regular, steel plate mainly occurs shear damage similar to hole piercing, the extent of damage gradually increase with explosive mass increasing, finally explosion outcome will enter oilcan's interior from crevasse.

由于药柱形状规则，钢板主要发生类似冲孔的剪切破坏，破坏程度随炸药质量的增加而加强，爆轰产物会从钢板破口处进入油罐内部。

To aim a weapon horizontally.rear gunsight having an open notch instead of a peephole or telescope.

在瞄准器的后部有一个开着的凹口取代了原来的窥视孔或望远镜。

The back of the thigh.rear gunsight having an open notch instead of a peephole or telescope.

在瞄准器的后部有一个开着的凹口取代了原来的窥视孔或望远镜。

An element of a vector space.rear gunsight having an open notch instead of a peephole or telescope.

在瞄准器的后部有一个开着的凹口取代了原来的窥视孔或望远镜。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。