间距

The rafters, spaced at approximately 80cm centers, are nail ed to the purlin.

椽子钉在连系梁上，中心间距为80厘米。

But as Pushtu was first written less than 500 years ago, the theory is hard to test.

但由于普什图人被首次记载的时间距今还不到500年，这种说法很难去验证。

AD 600, he was a "great imperial history," as the first time, taking into account the sun's uneven campaign, and the creation of "space, such as quadratic interpolation formula" to calculate the days, months, five-star speed.

公元600年，他创《皇极历》，首次考虑到太阳视运动的不均性，创立"等间距二次内插法公式"来计算日、月、五星的运行速度。

The total pregnant women took part in the urine testing of mercury was 2,190. The mean, median, minimum, maximum, 95%CI were 2.58ug/kg, 1.66ug/kg, 0.01ug/kg, 62.07ug/kg, 2.42-2.74ug/kg respectively, and the quarte range was 1.79ug/kg.

孕妇孕期及其新生儿内环境汞暴露现状本次孕妇尿汞检测总计有效2190例，算术平均值为2.58ug/kg，中位数为1.66ug/kg，最小值为0.01ug/kg，最大值为62.07ug/kg，95％CI为2.42-2.74ug/kg，四分位数间距为1.79ug/kg。

The quasi periodic regularly structure of tissue peaks in the power cepstrum of ultrasonic backscatter.

本文论述了软组织散射元准周期规则分布导致超声散射信号相干峰产生的机理，提出利用AR幅度倒谱估计散射元平均间距及其变化，结合组织外加应力来估计软组织内局部杨氏弹性模量。

Radial engine in normal attitude with forward drive via cooling fan and centrifugal clutch to bevel box and rotor shafts, with hydraulic coupling and additional oil-depressed spring which on failure of drive forced blades into autorotative pitch.

在正常的态度与前径向发动机驱动冷却风扇和离心通过离合器锥盒，转子轴，与液力偶合器和额外的石油沮丧春天对驱动器发生故障被迫autorotative间距刀片。

Because the radiosonde observation stations are sparse, there are only a little of information of mesoscale in assimilation resulte.

探空网的探测点稀疏（间距一般在300 km或以上），单纯用它们作客观分析会使得同化结果缺乏中尺度信息。

The rational selection of space between shot holes is the key to improvement of lump coal rate.

为了提高煤炭块率，炮孔间距的合理选取是提高块煤率的关键。

Gscoh gs fsR, gscoh as the solid fraction when the formation of the continuous dendrite framework, fsR as the maximum solid fraction after recalescence,βs as the solidification shrinkage of the primary phase,μas the dynamic viscosity of the liquid, a as the length of L/S coexistence zone,λ2 as the secondary dendrite arm spacing, and tf as the total solidification time. High temperature recovery and recrystallization taking place in these fragments during further cooling results in the further grain size decrease.

本文通过对过冷DD3高温合金再辉过程中累积应力的计算，得到作用于初生枝晶的累积应力σs，可表示为：式中，gl是液相体积分数，gs是固相体积分数，gscoh是连续枝晶网络形成点对应的固相分数，fsR是再辉结束后固相分数，βs是快速凝固中液固收缩率，μ为液态合金的动力学粘度，a是再辉中液固共存区长度，λ2是枝晶二次间距，tf是总凝固时间，即再辉时间。

Firstly, based on the Duhamel integral and dynamic reciprocity theorem, the generalized Duhamel integral expression is written to a point in the half infinity space under moving load. Secondly, the train load is considered as a series of centralized loads with fixed distance. The dynamic response expression of a point in frequency domain and frequencywavenumber domain are derived out through the Floquet transform and Fourier transform under a moving load, and then the dynamic response of a point is gotten ...

以Duhamel积分为基础，首先应用动力互等定理，得到了移动荷载作用下，半无限大弹性连续介质空间上任意点的动力响应的广义Duhamel积分表达式；然后将列车荷载简化考虑为一系列具有一定间距的集中荷载，采用Floquet变换、Fourier变换等方法，得到了一个集中移动荷载作用下任意拾振点ξ的动力响应在频域和频率波数域内的表达式，进而由叠加原理得到列车荷载作用下的动力响应解；最后，通过算例说明该算法的适用性。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。