距

The problem of the error of calculation formula calculating the variance of grouping data within distances in statistics was put forward,and the concrete forms of correcting formula were given by the theorem of addition and the variance of even distribution.

提出统计学中的组距分组资料方差和标准差计算公式误差问题，由方差的加法定理和均匀分布方差给出分组资料方差计算和标准差计算的修正公式具体形式，并就均匀分布数列和正态分布数列组内方差平均数进行了讨论

Several factors that affect the stability of solder bridging spanning two identical circular pads are considered herein, including the pad size, the total volume of solder bumps, the pitch between adjacent pads, the contact angle between the molten solder alloy and the pad, the contact angle between the molten solder alloy and the solder mask and the surface tension of the molten solder alloy, respectively.

锡桥稳定性之影响因子，如垫片尺寸、焊锡凸块总体积、相邻垫片脚距、熔融焊锡与垫片间之接触角、熔融焊锡与防焊层间之接触角以及熔融焊锡之表面张力等均分别予以有系统之探讨。

Transportation is convenient, Lan Pro Park adjacent to the west side of the highway from the 212 National Road 1 km, more than sixty kilometers away from Lanzhou, the county town 20 kilometers.

交通便利，兰临高速公路紧邻园区西侧，距212国道1公里，距离兰州60多公里，县城20公里。

It is less than 72 km (45 mi) from Italy, across the Strait of Otranto which links the Adriatic Sea to the Ionian Sea.

它距意大利不足72公里（45英里），中间是连接亚得里亚海和爱奥尼亚海的奥特朗托海峡。

Study the aeolian vibration control of transmission lines and subspan oscillation control of bundle conductors has great theoretical significance and social economic significance.

输电线的微风振动控制和次档距振荡控制研究是一个有着重大理论意义和社会经济意义的课题。

The work of this dissertation hopes to provide some useful reference for the construction of UHV transmission projects, hopes to provide a more effective theoretical basis for the design of aeolian vibration control and subspan oscillation control, and hopes to lay the foundation for a more in depth study of this subject in the future.

希望本文的研究能够为特高压输电工程的建设提供一些有益参考，为输电线的微风振动控制设计及次档距振荡控制设计提供更为有效的理论依据，为以后更深入的研究打下一点基础。

At 05:30, we arrived at the War Aerodrome , which is 15 kilometers outside of Berlin .

在凌晨五点半，我们抵达了距柏林15公里外的War Aerodrome。

Aerodynamic force,moments,and longitudinal stability derivatives are estimated by three-dimensional low-order panel method.

涉及的气动力、力距和纵向稳定导数等则由三维低阶板块法计算获得。

This dissertation is engaged in increasing the efficiency of the variable speed variable pitch WPGS. The technical and operation characteristics of the system are analyzed and the control schemes are researched in theory and simulation. And then, the emulation of WPGS in lab is also explored in order to verify the affectivity of the control scheme.

本文以提高风力机的风能捕获效率为目的，以变速变桨距风电机组为研究对象，分析了其技术特点和运行特性，对其变速控制策略进行了深入的理论研究和仿真分析，并对其实验验证手段进行了探索。

Based on these recognitions, by the analysis of production method, development formation division, development well grid and well spacing, single well daily rate and recovery efficiency prediction, etc, a development plan was brought to effect: it is all around affusion and made the oil-well of east fault sparse, and predicted the recovery efficiency of 55%, provide a sound foundation for the future development in the area.

在此认识的基础上，通过开采方式、开发层系划分、开发井网和井距、单井日产能力、采收率预测等研究，确立了边外注水+断层东油井抽稀，断层西少部署一排油井的开发方案，利用数值模拟方法，预测采收率为55%，完成油藏开发方案的设计，为该区下一步开发提供了有力依据。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。