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But climbing Pacaya is no easy job: it is 2560 metres high, and reaching the summit takes two to three hours of seemingly one-step-forward and two-step-back movements.

但爬帕卡亚并非易事：它海拔2560米高，要到达顶端需要2-3个小时似乎都是一步两回头的慢慢移动。

In a word, powerful clan in West and East Han dynasties built and kept clan power, completed step by step the transition from civil society to clan society through the development of powerful clan, especially the patriarchalism of powerful clan, thus forming the foundation of Shi Zu society of Wei and Jindynasties.

第三章 豪族的宗族化进程与汉代社会结构的演变两汉是宗族势力的复苏和重建，在一定程度上取决于豪族势力通过政治联结，逐步控制汉代政治的运行，出现&累世公卿&的名门望族，即豪族的官僚和宗族化来实现的。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。

The acceleration profile of the crane motion is designed to induce minimum payload pendulation during transpo rt,while the deceleration stage is designed to ensure freed om of residual oscillation near the end of the transport,and to deliver the payload at the target point.The techniques induce payload pendulation at least one half ofan oscillation cycle or integer multiples during each of the acceleration and deceleration stages.Starr(1995)designed a symmetric two-step acceleration and deceleration profile to transfer a suspended object.The duration on the constant acceleration steps is assumed to be negligible relative to the period of the payload oscillation.A linear approximation method of the oscillation period is used to generate the two-step symmetric acceleration profile.

3.1投入成型技术，各种形式的投入shapers ， convolved参考命令，产生形投入指挥，驾驶起重机提出一套距离沿一套path.the加速度概况起重机议案旨在诱使最低载重pendulation期间transpo rt ，虽然减速阶段，目的是确保freed om残余振荡接近尾声的运输，并交付载荷到达目标point.the技巧诱使载荷pendulation至少一半ofan振荡周期或整数倍数。

"It's an important step but only a single step," said Shimon Peres.

&这是一个重要的一步，但只有一个步骤，&佩雷斯说。

With scientific and technological advance, it will be developed and perfected step by step.

随着科学技术的进步，神经必将得到不断发展和完善。

The application of the genetic codes is another kind of permutable calculation . From DNA chain to mRNA chain , t RNA , ribosome , peptides , and to protein , each step has its own permutable calculation from chemical reactants to products . None step has an indispensable relationship

密码表应用体系中，从DNA分子到m RNA分子到t RNA，再到核糖体到肽链，没有一步使用了排列数计算方法，从而造成DNA分子信息传递时步步失真，最后变成了肽链具体位置上的氨基酸分子，这里的每一步信息传递都是对密码表的错误运用。

Finally, we phenomenologically separate phase according to magnetic fields, the results is consistent with our new idea where we use the Hamiltonian with curved surface to analyze XY model. In chapter Ⅳ, we make two hypotheses: the system has one-step time correlation and two-step time correlation. We find the effect of Ratchet potential is similar to OSTC which changes the system's relaxation. TSTC may facilitate the system to move forward or backward along the nonlinear wave of the thermal fluctuation.

第四章，我们进一步作了两个唯象的假设：体系有一步和两步时间关联；发现Ratchet势与一步时间关联有相似效果——改变了体系对热噪声的驰豫；而两步时间关联项则能够促使体系在热噪声的非线性波形上定向&冲浪&，或者促使体系躲避热噪声的扰动保持在势阱底部。

First, based on the research of vocality art and vocalization, I discuss how to set up reasonable aesthetics concept on tenor"s voice, then expatiate on the characteristics,of the tenor"s voice in bel canto and the theoretic significance of setting up reasonable sound aesthetics concept. This essay is mainly on the way and key point of constructing tenor" s voice, especially solving the core problem of alt skill. The essay argues that the construction of tenor" s voice is based on the mediant and undertone sections; finding the phonate source, practice step by step, surrounding the point , string and side of the voice; train the students using suitable vowels according to the students with different characteristics ; emphasizing that ten essential words are the golden key to solution of the core problem in the "closing " method.

首先从研究声乐艺术和发声方法的指导思想和出发点着手，探讨了如何建立科学的男高音声音审美观；进而阐述了美声唱法中男高音的声音特点及建立科学审美观的理论指导意义；本文着重提出了构建男高音声音的方法与要领(特别是解决高音技术这一核心问题)，本文认为男高音声音构建先以中、低声区为基础，从找发声点开始，围绕声音的点、线、面逐一训练，同时根据不同特点的学生选择合适的母音进行训练，强调了&关闭&唱法中十字要领是解决核心难点的金钥匙。

Based on the rapid development of Close-range photogrammetrical and laser-scanning technology, this paper presents some demerits of traditional Close-range photogrammetry, demands for the real-time photogrammetry at present, as well as the personal investigation in the theories of laser-scanning and the technologies about step-by-step generator and manipulating console.

本文针对近景摄影测量和激光扫描技术的发展，分析了传统近景摄影测量存在的问题和当前对实时摄影测量的需求，深入地研究了三维激光扫描的基本原理和实现其基本原理的关键技术。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。