机械学

For there is no concrete mathematical expression to describe its complicate inner working process and theoretical calculation, and the movement of piston is a kind of nonlinear variable accelerated motion, we have to resort to computer technique to do theoretical research work.

油压夯管锤是高能量输出的油压马达，其工作性质是建立在流体力学、液压传动、运动学、动力学、机械学、波动力学等多学科基础上的流体机械，其内部工作过程和理论计算比较复杂，没有显示的数学表达式，而活塞的运动又是一种非线性的变加速的运动过程，因而，其理论研究必须借助电子计算机。

The failure analysis of this article gets lots of subjects and theoretics involved, such as electrotechnics, mechanics, materials science, reliability theory and electric contact theory.

本文中的中间继电器失效分析是涉及电工学、机械学、材料学等多学科，可靠性理论、电接触理论等多种理论的复杂研究内容。

A new bionics propulsion equipment—fishlike flexible tail fin propulsion equipment is brought forward,because there are some problems in present thrusters,such as big noise,low propulsion efficiency in shallow water and evident wake.

本文针对现有船用螺旋桨、泵喷等常规推进器存在噪音大、浅水中船舶推进效率不高以及尾迹明显等缺点，提出一种新型仿生推进装置—仿鱼尾柔性尾鳍推进装置，并据此展开了对单翼板柔性尾鳍和双翼板柔性尾鳍模型的计算和实验研究，本文工作属于鱼类生物流体力学、机械学、材料学和控制技术等多学科交叉的一个新兴研究领域。

In order to satisfy itself to as well as enriches my knowledge with the contemporary science hope, I have not only studied the machine science core curriculum like mechanics, the metal, the process and the material, but also through was the audit method has studied the other curriculum like discrete mathematics, the advanced algebra, the group theory in other and so on.

为了满足自己对与当代科学的渴望以及丰富我的知识，我不仅学习了机械科学的基础课程如机械学、金属、过程与材料，还通过在其他系旁听的方法学习了其他课程如离散数学、高等代数、群论等。

One of my friend is studying mechanics.

我的一个朋友在学机械学。

The comprehensive motional analysis and the comprehensive dynamic analysis of a mechanical device are important components of mechanical designing.

机械的运动综合和动力综合是机械学理论体系中的重要组成部分。

Phys. The science of matter and energy and of interactions between the two, grouped in traditional fields such as acoustics, optics, mechanics, thermodynamics, and electromagnetism, as well as in modern extensions including atomic and nuclear physics, cryogenics, solid-state physics, particle physics, and plasma physics.

物理，物理学：有关物质和能量及两者之间相互作用的科学，传统上分为声学、光学、机械学、热力学和电磁学，现今又扩展到包括原子物理、核物理、低温学、固体物理学、微粒物理学和等离子体物理学

1Musculoskeletal Tumor Center, Peking University People's Hospital, Beijing 100044, China; 2Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China

北京大学人民医院骨与软组织肿瘤治疗中心，清华大学精密仪器与机械学系，北京大学人民医院骨与软组织肿瘤治疗中心，清华大学精密仪器与机械学系

The tibiae were later examined radiographically, histologically, and mechanically. Implantation of bmp2-CaP-collagen at 12 g bmp2 bridged the bone defect at 4 weeks, and the strength of the bone was comparable to that of an intact tibia at 6 weeks.

随后对上述胫骨做影像学、组织学、机械学上的检测。bmp2在12ug的水平时，bmp2-CaP-collagen植入物在4周时填补了骨缺损；6周后骨强度与正常骨相当。

Kinetic art :活动艺术活动艺术 Art characterized by the incorporation of painted and sculpted mechanical parts into an art piece that moves or creates the impression of movement.

世纪中期的一种与机械学相结合的艺术，采用活动部件，造成动感效果的雕塑艺术。兴起于 20 世纪中期的一种与机械学相结合的艺术，采用活动部件，造成动感效果的雕塑艺术。

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。