因为东面有冰的屏障，西面是太平洋，而且北面是人口稠密的地区，所以促使人们向南迁移的动力会更大。
Because of the barrier of ice to the east, the Pacific Ocean to the west, and populated areas to the north, there may have been a greater impetus for people to move in a southerly direction.
冰荷载对海洋结构的威胁除了它们的高荷载外，更多的在于显著的动力效应。
The ice loads threaten offshore structures by their evident dynamic effects in addition to high load.
海冰-结构的动力相互作用、冰激振动及冰载荷的识别问题，仍是目前工程海冰界的核心和热点问题。
Dynamic interactions of sea ice with offshore structures, ice-induced vibrations and ice loads identification, are still the hot and key problems in ice engineering.
进行理想场的数值试验，模拟冰厚变化动力过程。
Numeric experiments of the ideal ice fields are carried out for simulating the dynamic process of ice thickness variation.
基于统一设计变量方法，实现了导管架海洋平台在动冰载荷作用下的截面和形状动力优化设计。
Based on the unified design variable method, the shape and sizing optimization design of jacket platform with dynamic ice-load is investigated.
土中水分迁移的动力势问题是探讨水分迁移成冰机理以及研究冻胀、冻土内应力等冻土工程问题的关键所在。
The driving force of moisture migration in soil is the key of discussing the mechanism of freezing ice and frost heave and the stress of freezing soil.
对冰点以下的增长动力学，讨论了冰熔融模型、冰核收缩反应模型和水合物原位偏离模型。
As for hydrate growth kinetics below ice point, the melting model of ice, shrinking ice-core model and delocalization model were discussed.
针对我国电力线路严重驰振区的实际情况进行了覆冰导线群的动态气动力特性测试。
The systematic tests have been carried out on the aerodynamic characteristics of galloping of bundled iced electric power transmission lines.
在一个小型工业化水合物生成装置上，对由冰和天然气反应生成天然气水合物的过程及动力学进行了研究。
The reaction process and the reaction kinetics of forming a hydrate from natural gas and ice are studied on a small sized industrial unit.
基于矩阵摄动和动力子结构方法，系统地建立了改善冰与结构动力相互作用的结构布置优化方法。
A systematic approach of structural optimization for improving dynamic ice-structure interaction is presented in this paper on the basis of matrix perturbation and dynamic substructure techniques.
在一定程度上，数值结果反映了新月形冰型的覆冰导线模型气动力特性。
To some degree, the numerical result reflects some rules of the static aerodynamic characteristics of iced conductors.
对使用不同冰力模型计算出的平台疲劳寿命进行的对比结果表明，较高冰速下平台动力响应较小；
The comparison of different fatigue life of platform calculated by different ice-force model indicates that the vibration amplitude of platform is relatively small at high ice velocity.
冰的连续挤压引起柔性结构的剧烈振动表明冰荷载的动力性质和对该问题采取对策的必要性。
The intensive vibration of flexible structures induced by continuous crushing of ice indicates the dynamic nature of ice loads and the necessity of taking countermeasures to solve this problem.
这一参数直接反映出冰与结构综合作用条件对系统动力效应的控制水平，为冰激柔性直立桩结构振动问题的研究开辟了一个重要的突破方向。
This parameter directly reflects the interaction level of ice and structure, and creates an important breakthrough direction in the research of ice induced vibration of compliant vertical column.
由于所处的复杂的海洋环境，储油罐平台承受各种动力荷载作用，如风、波浪力、冰、地震等等。
Variously complex accidental loads such as earthquake, wave, wind, ice and so on acted on the platform.
应用动力模型可以计算出某一流量过程的最高冰塞、冰坝水位。
The dynamical model can be used to calculate maximum ice jam stages when discharge hydrographs at boundary sections are provided.
准确地评判物质平衡变化趋势则需将物质平衡与冰体动力学结合起来，并建立冰-海-气耦合模型。
It is necessary to combine the mass balance with the ice sheet dynamics and to develop the couple model of ice-ocean-atmosphere for accurate estimate of the mass balance state and its variability.
本文研究了低硫高冰镍常压选择性浸出的动力学过程。
In present work, a kinetic study on selective leaching of low-sulfur Ni-Cu matte at atmospheric pressure was conducted.
在对冰转化为水合物控制步骤分析的基础上，引入符号函数并提出一个改进的未反应核收缩模型来描述冰转化为水合物的动力学。
On the basis of analyzing the control step for ice conversing to hydrate and introducing the sign function, the unreacted core shrinking model for hydrate formation was proposed.
在对冰转化为水合物控制步骤分析的基础上，引入符号函数并提出一个改进的未反应核收缩模型来描述冰转化为水合物的动力学。
On the basis of analyzing the control step for ice conversing to hydrate and introducing the sign function, the unreacted core shrinking model for hydrate formation was proposed.
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