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The results were as follows the airdried density ( moisture content of wood is 12%), the basic density and the ovendry density were 0.583 g·cm-3, 0.462 g·cm-3 and 0.507 g·cm-3 respectively, the airdried density was at the medium level in domestic wood species;the shrinkage coefficient of radial, tangential and volumetric were 0.099%, 0.183% and 0.296% respectively, the maximum swelling were 4.106%, 7.958% and 12.627% respectively;the ratio of tangential shrinkages to radial shrinkages was 1.5-1.9;the toughness was 52.12 kJ·m-2;the hardness of cross, radial and tangential section were 41.53 MPa, 31.41 MPa and 35.51 MPa respectively;the compressive strength parallel to grain was 44.50 MPa ;the modulus of elasticity in static bending and the bending strength were 12.63GPa and 127.31 MPa respectively;the shearing strength parallel to grain of radial and tangential were 8.76 MPa and 10.54 MPa respectively;the cleavage strength to grain of radial and tangential were 124.3 N·mm-1 and 138.6 N·mm-1 respectively.

结果表明大叶栎木材的气干密度(含水率为12%)、基本密度和全干密度分别为0.583 g·cm-3、0.462 g·cm-3和0.507 g·cm-3,气干密度属于国产木材的中等级水平;径向、弦向和体积干缩系数分别为0.099%、0.183%、0.296%,湿胀率依次为4.106%、7.958%和12.627%,差异干缩为1.5-1.9,其尺寸稳定性较好;冲击韧性为52.12 kJ·m-2,端面、径面和弦面硬度分别为41.53 MPa、31.41 MPa和35.51 MPa,顺纹抗压强度为44.50 MPa,抗弯弹性模量和抗弯强度分别为12.63 GPa和127.31 MPa,径面和弦面顺纹抗剪强度分别为8.76 MPa和10.54 MPa,抗劈强度依次为124.3 N·mm-1和138.6 N·mm-1。

The shiftings of the carrier envelope phase on the axis and on the radial direction are studied by adopting the simulation methods.

在啁啾脉冲光束谱宽相等的条件下,采用数值方法,分别研究了其载波相位在传播方向与径向上的漂移情况。

The results were as follows: the air-dried density(moisture content of wood is 12%),the basic density and the oven-dry density were 0.583 g·cm-3,0.462 g·cm-3 and 0.507 g·cm-3 respectively,the air-dried density was at the medium level in domestic wood species;the shrinkage coefficient of radial,tangential and volumetric were 0.099%,0.183% and 0.296% respectively,the maximum s...

结果表明:大叶栎木材的气干密度(含水率为12%)、基本密度和全干密度分别为0.583 g.cm-3、0.462 g.cm-3和0.507 g.cm-3,气干密度属于国产木材的中等级水平;径向、弦向和体积干缩系数分别为0.099%、0.183%、0.296%,湿胀率依次为4.106%、7.958%和12.627%,差异干缩为1.5-1.9,其尺寸稳定性较好;冲击韧性为52.12 kJ.m-2,端面、径面和弦面硬度分别为41.53 MPa、31.41 MPa和35.51 MPa,顺纹抗压强度为44.50 MPa,抗弯弹性模量和抗弯强度分别为12.63 GPa和127.31 MPa,径面和弦面顺纹抗剪强度分别为8.76 MPa和10.54MPa,抗劈强度依次为124.3 N.mm-1和138.6 N.mm-1。

Achievements of these technologies to enable the development of our country at the radial piston pump design theory and materials and made breakthrough progress in technology.

这些技术成果的取得,使我国径向柱塞泵的研制在设计理论与材料工艺方面取得突破性进展。

The simulation results of filling pressure and the experimental results of semiso- lid brake pump casting show that semisolid casting filled along the radial presents good forming quality.

半固态刹车泵体两种入流形式的充填压力模拟分析与实际成形结果表明,径向入流方式具有较高的成形质量。

The mill allows for umbrella-shaped piercing with axial delivery of a 360-450mm diameter billet from continuously cast rounds of 360-400 mm diameter.

这台轧机可以为直径为360-400毫米的圆钢经过连铸机到直径为360-450毫米径向传输的钢坯穿孔。

As the continuation of [1], in this present paper we discuss the longitudinal property of the three-electrode system of lateral logging tool.

作为《三电极系侧向测井径向几何因子》一文的继续,本文讨沦了三电极系侧向测井仪的纵向特性。

POWER PLANT: Two 242.5kW Vedeneyev M-14V-26 air-cooled radial piston engines, mounted in pods on short stub wings at top of fuselage.

电厂:两个242.5kW韦杰涅耶夫的M - 14V的- 26风冷径向活塞发动机,在短翅荚存根安装在机身顶部。

Flow-field simulation shows that radial pressure gradient goes down fast and air flowrate is nearly directly proportional to the well vacuum and the soil permeability coefficient. It also indicates that stop-off coating will play an important role in SVE.

采用Galerkin三角形有限单元法对复合地表边界的竖井土壤气相抽提稳态流动问题进行了数值模拟分析,模拟结果显示:气相压力沿径向梯度迅速下降,抽提流量与土壤通透系数及真空度呈现高度相关的正比例关系,且地表隔绝覆盖层对流场影响很大。

It is also analyzed that the influences of target shape, radial length and pulsewidth on the simulation results.

数据分析表明激光一维距离像曲线能够较好反映目标的纵向几何外形信息,并着重讨论了入射激光脉冲宽度与目标径向尺寸对距离像的影响。

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