孔的

This paper tries to deduct rigorously the equation for the flow rate by using the Bernoulli equation,and to provide the expression of flow rate coefficient.

在孔板流量计中，流体流过孔板，孔板前后的流道面积收缩，其静压能转化为动能，从而出现压差，压差的大小反映流量的大小。

Dynamic pressure averaging pipe was generally applied to blowing rate measurement in rectangular pipe of power plant, the average velocity of flow in the section was represented by the average dynamic pressure at the line through the geometric center of the cross section, and then the blowing rate was determined.

针对这一问题，本文设计了基于"对数契比雪夫法"的送风流量测量装置，将5支动压平均管置于同一截面，按"对数契比雪夫法"选点位置开孔，把这5支动压平均管的静压输出孔、总压输出孔分别连接到一起作为传感器组件的差压输出，实验表明这种方法使测量准确度明显提高。

For different carbon nanomaterials, adsorption seems to relate with their surface area, micropore volume, and the volume ratios of mesopore to micropore.

对于不同的碳纳米材料，吸附似乎在与他们的比表面积，微孔体积和孔体积的比例微孔。

To investigate the influence of an upstream ramp on film cooling heat transfer coefficient, a numerical simulation method on the distributions of the flow fields and heat transfer coefficient was adopted with different heights of upstream ramp s in several ratios.

为了获得气膜孔上游放置斜坡对气膜孔换热特性的影响规律，采用数值模拟方法研究了斜坡的台阶高度分别为0.3D，0.5D和0.75D时在不同吹风比下的流动过程和换热特性分布情况，并与常规气膜孔冷却结构形式进行了对比。

It provides a scientific appraisal method for the judgement of grouping reasonableness of piston pin and piston hole .

提出了活塞销与活塞销孔配合的可靠度概念及计算方法，可以定量地反映出活塞销与活塞销孔配合达到设计要求的程度，为判断活塞销与活塞销孔分组是否合理提供了一个科学的评价方法。

In this paper, some practical and advanced geophysical methods are introduced. These methods include resistivity image profiling, 3D reflection seismics, borehole radar, borehole camera, acoustic televiewer log, dipmeter log and cross-hole log. The main purpose of this paper is to briefly introduce their operating principles and possible applications to geotechnical engineers for references.

本文列举数项实用且先进的地球物理技术，包括：地电阻影像剖面法、三维反射震测法、孔内雷达探测技术、孔内摄影法、超音波电视井测、倾角井测及跨孔井测等，就其施测原理与可能的应用方向做一介绍，期能提供大地工程调查规划时的参考。

Subgradient projection method with variable diameter for optimization;2. The variable diameter deephole blasting was adopted to solve problems of open-pit high bench mining.

采用变直径深孔爆破工艺可较好地解决露天矿高台阶开采的爆破根底问题，对等直径和变直径 2种深孔形式爆破后岩体移动速度情况采用高速摄影手段进行了分析和研究，为在高台阶开采的矿山推广变直径深孔爆破提供一些有益的参考依据。

Those parent abalones of wild or artificial selection with good economic characters must be chosen in order to avoid close breeding.. Correct breeding techniques must be adopted to obtain excellent germ cells and larvae. The survival rate and disease resistance of juvenile abalone can be remarkably increasedonce the further selecting and culturing are carried out. The rejuvenation is realized once a good breeding condition for the young and parent abalones is created, the adverse culturing condition and technical maloperation are reduced or eliminated. The survival rate of the breeding and young abalonesincrease about 28.9%-31.2%, the survival rate of the grown abalones is high up to 85%-90%.

通过挑选经济性状好的台湾九孔鲍和人工选育的九孔鲍亲体进行繁殖，避免近亲繁殖，选优除劣，达到正本清源的目的；采用正确的繁殖技术，获得优良的受精卵和幼虫，通过对幼虫进一步选优和培育，使附板后的幼鲍成活率及抗病力得到明显提高；为九孔鲍的苗种和亲本培育创造良好的养殖生态条件，减少和消除了不利的养殖环境和操作技术，达到品种复壮的目的；阐述了野生鲍、复壮鲍、退化鲍三个不同类群的免疫机能具有显著的差异，复壮后的九孔鲍，其免疫机能基本达到了野生鲍的水平；人工育苗和幼鲍的成活率提高了28.9%-31.2%；成鲍的养殖成活率高达85%-90%以上。

Those parent abalones of wild or artificial selection with good economic characters must be chosen in order to avoid close breeding.. correct breeding techniques must be adopted to obtain excellent germ cells and larvae. the survival rate and disease resistance of juvenile abalone can be remarkably increased once the further selecting and culturing are carried out. the rejuvenation is realized once a good breeding condition for the young and parent abalones is created, the adverse culturing condition and technical maloperation are reduced or eliminated. the survival rate of the breeding and young abalones increase about 28.9%-31.2%, the survival rate of the grown abalones is high up to 85%-90%.

通过挑选经济性状好的台湾九孔鲍和人工选育的九孔鲍亲体进行繁殖，避免近亲繁殖，选优除劣，达到正本清源的目的；采用正确的繁殖技术，获得优良的受精卵和幼虫，通过对幼虫进一步选优和培育，使附板后的幼鲍成活率及抗病力得到明显提高；为九孔鲍的苗种和亲本培育创造良好的养殖生态条件，减少和消除了不利的养殖环境和操作技术，达到品种复壮的目的；阐述了野生鲍、复壮鲍、退化鲍三个不同类群的免疫机能具有显著的差异，复壮后的九孔鲍，其免疫机能基本达到了野生鲍的水平；人工育苗和幼鲍的成活率提高了28.9%-31.2%；成鲍的养殖成活率高达85%-90%以上。

objective to study the diagnosis and operative treatment of foramen magnum tumors.methods the clinical presentations,mri images, operative technique and prognosis of 9 cases with tumors of the foramen magnum were analyzed retrospectively.results 5 cases got total removal, 3 cases got subtotal removal, and 1 case got partial removal.conclusion acquaintance with anatomy of foramen magnum region,microsurgical technique,suitable surgical approach and post--operative management are closely related with the therapeutic effect.

目的 研究枕大孔区肿瘤的诊断与手术疗效。方法回顾性分析9例枕大孔区肿瘤的临床表现和mri影像，手术技巧和预后。结果全切5例，次全切3例，部分切除1例。结论熟悉枕大孔区解剖，运用显微外科技术，选择合适手术入路，注重术后处理，都与疗效密切相关。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。