1) temperature displacement carrier constant
温度位移载常数
1.
In order to monitoring new built dam running, the paper puts forward the method of establishing concrete arch dam temperature displacement time spatial distribution deterministic model by using temperature displacement carrier constant and switch function, based on a number of normal reversed pendulums and thermometers buried in dam body.
为监控新建坝的安全运行 ,针对坝体埋有一定数量正倒垂线及温度计的特点 ,提出了采用温度位移载常数和“开关函数”建立混凝土拱坝位移时空分布确定性模型的方法 。
2) Shift constant
位移常数
3) temperature displacement
温度位移
1.
In the same case, the formula for calculating the radial temperature displacement at any radius in pipeline at dam back is given by means of elasticity mechanics;and the influence of the stiffness of pipeline at dam ba.
考虑大坝背管环向拉裂,取用了合适的环向等效弹性模量值,算出了相应的环向钢材应力,并探讨了背管刚度对钢材应力分布的影响;同条件下,用弹性力学得出了背管在任意半径处的温度径向位移计算公式,并探讨了背管刚度对背管温度位移的影响。
2.
The tests and theoretic analysis on temperature gradient and temperature displacement due to sunshine on broad box girder sections with curved bottom show that when temperature difference between the top of top plate and the bottom of bottom plate is not so large, it would mainly concentrate in the 0.
通过试验与理论分析研究了日照下弧形底宽箱梁节段的温度梯度和温度位移。
4) temperature-displacement field
温度位移场
5) a method of utilizing temperature load and supporting points movement
温度荷载结合支点位移法
6) geopotential constant shift
重力位常数漂移
补充资料:介电常数温度计(dielectricconstantthermometer)
介电常数温度计(dielectricconstantthermometer)
一种以气体的介电常数和密度之间的关系为依据与理想气体的状态方程联立,可以由气体的介电常数与温度的关系来测量热力学温度。这种温度计作为内扦和基准温度计都很有前途。
根据Clausius-Mossotti公式`\frac{\epsilon_r-1}{\epsilon_r 2}=\frac{\alpha}{V_m}`,其中εr=ε/ε0为相对介电常数、α是摩尔极化率、Vm为摩尔体积,此式与pVm=RT联立可得
$p=\frac{R}{\alpha}(\frac{\epsilon_r-1}{\epsilon_r 2})T$
由此可见,只要测得εr就可以定出温度T。相对介电常数可由电容器在真空与有介质时的电容量C0和C的测量而得到$\epsilon_r=\frac{C}{C_0}$,令$\beta=\frac{C-C_0}{C_0}$,$\mu=\frac{\beta}{\beta 3}$,可解得
p=A1μ(1 A2μ A3μ2 …)
其中$A_1=(\frac{a}{RT} \frac{K}{3})^{-1}$,气体稀薄时μ→1,所以上式取近似可得p=A1μ,作为p-μ等温线即可求出斜率A1,再有两个温度固定点来定出a、K,于是由此式即可求得温度。它测的是热力学温度,有很高的精度。
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