管

The real shape of U tube was considered, and heat transfer model of underground vertical buried tube heat exchanger was built with math methods and numerical analysis software. The soil temperature distributions around the buried tube under different working conditions were solved by programming.

考虑U型管的实际形状，借助数学方法和数值分析软件，建立了地下垂直埋管换热器传热模型，并通过编程求解数学模型，得到了系统短期运行不同工况下埋管周围土壤的温度场分布情况。

The thorough knowledge of the gas permeability of softwoods can be gained by the flow-resistor of tracheids for the flow of gas.

本文从针叶树材管胞解剖结构出发，运用流体力学理论，导出了管胞 3个纹理方向渗透气体流阻的数学表达式，并由此计算了针叶树材管胞的气体渗透系数。

The influencing factors of longitudinal mechanical properties of tracheids: 11 Experiments and theoretical calculation has proved that MFA of S〓 layer is the determinant factor of longitudinal mechanical properties of trachedis with smaller angle corresponding to better mechanical properties.

管胞细胞壁纵向力学性能的影响因素： 11实验和理论计算均表明，S〓层微纤丝角是管胞纵向力学性能的决定性因素，微纤丝角越小，管胞的纵向弹性模量和强度越大。

Day-to-day business:"S" valve, shell,"Y" tube, skirt valve, butterfly valve, hopper, piston, wear-resistant plate, Pipeline, tube clasp, pumps, motor valves, 00 # lubricants , hoses, Aprons, sponge ball, sleeve, wear sets, all kinds of oil seal repair kits.

日常经营范围：&S&阀、壳体、&Y&管、裙阀、蝶阀、料斗、活塞、耐磨板、输送管、管扣、油泵、马达阀组、00＃润滑油、软管、胶圈、海绵球、轴套、耐磨套、各种油封修理包。

The method locates with Raypex5 root needle appearance has a tooth to 205 in all 403 roots canal undertakes length of root canal job is measured, after undertaking with this length the root is in charge of provision to fill up, film X line piece the quality that observes root canal fills up.

方法用Raypex5根尖定位仪对205颗患牙共403个根管进行根管工作长度测量，以此长度进行根管预备充填后拍摄X线片观察根管充填的质量。

Objective To study the feature of the incisor nerve canal and its relation to the mandibular canal and mental canal so as to offer a reliable anatomical data for the distric operation.

目的 研究国人切牙神经管的位置及下颌管、颏管的关系，为临床手术提供解剖学数据。

Results: group A( diskectomy, 160 cases) were followed up and excellent: short-term 90%,in the near future 88%, long-term 84%;36 cases were accepted second operation during 0.5 year to 5 year and 28 cases had nerve root canal stenosis.

结果：A组随访总有效率分别为：短期90％，近期88％，远期84％；有36例(22.5％)患者在0.5-5年间接受了二次椎间盘手术，其中28例原因为神经根管狭窄。B组(髓核摘除并神经根管探查、扩大术组)168例病例术中发现88例(52.4％)有不同程度神经根管狭窄，且均为年龄40岁以上、平均病程5.8年的患者；随访总有效率分别为：短期98％，近期95％，远期92％。

Gas column (2) gaseous oil column (3) gaseous liquid column from pump to the tube end (4) gaseous column from tube end to the formation According to the flow pattern, this paper utilize the methods given by those papers .

从管柱结构上，将井筒划分为四个部分：(1)气柱段(2)沉没度(3)泵口至管鞋段(4)管鞋至油层中部在流态分布上，管鞋以上，尊重人前人的算法。

The Ribault, also known as the organ gun due to its many pipes, is a fearsome spectacle on the battlefield.

管炮又名风琴管炮，得名於其多根炮管，是极为恐怖的野战火炮。

Objective: To assess the sealing ability of three root canal sealers by a new quantitative method using glucose.

目的 ：用葡萄糖定量法检测根管微渗漏的模型评价 3种根管封闭剂封闭根管的能力。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。