低压的

There are complex variations in realistic low-voltage power line network topology framework.In order to study the low-voltage power line transmission channel model,a model to describe the power line network channel topology framework is established in terms of basic characteristics of low-voltage power line network in this paper.

低压电力线网络拓扑结构变化复杂，为了研究低压电力线信道传输模型，根据低压电力线网络的基本特点建立了描述电力线网络拓扑结构的模型，利用模型把低压电力信道作为一个过程去描述，建立了节点信号传输函数来推导低压电力线网络的传递函数。

To choose a low-stress job or career, it's important to consider what you can and can't abide, according to Andrea Moselle, senior manager of work/life at AstraZeneca Pharmaceuticals."Any job can be stressful or not, depending on how you view it."

要选择一份低压的工作或事业，重要的是要考虑好什么是你能够忍受的以及什么是你不能容忍的，根据AstraZeneca Pharmaceuticals公司的高级经理Andrea Moselle所说："一份工作有没有压力，关键是看你怎么去看待它。"

The Altai Paleozoic orogenic belt of Xinjiang Autonomous Rejoin is geologically wellknown both domestic and abroad by the intensive development of low-pressure metamorphism and granitic magmatism. Within pelitic metamorphic rocks, even though sillimanite is well developed and the low-pressure minerals like andalusite and cordeirite etc. are quite common, the assemblage of garnet and staurolite is more important.

中文题名阿尔泰海西造山带中－低压递增变质作用特征及其地球动力学副题名外文题名 Features and geodynamics of the low-to mid-pressure progressive metamorphism in the Altai hercynian orogenic belt 论文作者郑常青导师卢良兆徐学纯教授学科专业矿物学、岩石学、矿床学研究领域\研究方向变质地质学学位级别博士学位授予单位吉林大学学位授予日期2001 论文页码总数132页关键词阿尔泰造山带造山带构造地质馆藏号BSLW /2003 /P542 /1 新疆阿尔泰古生代造山带以低压变质及花岗质岩浆作用广泛发育闻名国内外，泥质变质岩系中矽线石较发育，红柱石和堇青石等低压特征矿物相当常见，但是，石榴石—十字石的组合更普遍。

It shows that the typhoon depression lasted for five days on land was because of a strong and wide convergence zone between two high pressures,together with the strengthening of southwesterly jet and its movement direction determined by the maximum wind speed by the subtropical high and the southwesterly.

其结果表明：两高间强而宽广的辐合带和西南急流增强使台风低压在陆上连续5d不消，副高、西南急流在低压区形成的最大风速中心位置决定台风低压移动方向。

The questions existing in the domestic low pressure steam system of largescale iron and steel enterprise are focused.

针对国内大型钢铁企业低压蒸汽系统存在的问题，在分析低压蒸汽系统结构的基础上，建立了低压蒸汽系统优化调度模型。

On the basis of analysis of systematic structure, the optimal regulation model of low pressure steam system is set up.

针对国内大型钢铁企业低压蒸汽系统存在的问题，在分析低压蒸汽系统结构的基础上，建立了低压蒸汽系统优化调度模型。

The effect of the spring thermal depression generally holds for almost a quarter of a year in the region, and the highest frequency and intensity respectively occur in April and May. It has an obvious diurnal variation pattern and gets stronger year by year.

研究结果表明：西南地区热低压具有明显的地域性，较少移动；春季我国西南地区近1/4时间受热低压影响，4月份热低压出现频率最高，而5月份的热低压最强，热低压存在明显的日变化且其强度有逐年增强的趋势。

The crystallization temperature and pressure of clinopyroxene phenocrysts from the ankaramite and basalt were estimated on the basis of the clinopyroxene-melt equilibrium principle: 1345～1366℃ and 1.75～2.05Gpa for ankaramite, with average geothermal gradient of 20-24℃/km, suggesting anomalous heat or geothermal gradient in this region may be one of the key reasons to produce the porphyry copper deposits in the region. In contrast, those in the basalts fomed under a relatively low crystallization temperature (1129～1191℃), and the pressure (1.19～1.60Gpa) and depth (39～53km), suggesting that the basalt formed under a condition of lower temperature and pressure.

根据单斜辉石-熔体平衡原理计算了富辉橄玄岩和玄武岩中斑晶相辉石形成的温度和压力，前者变化范围主要集中在1345～1366℃和1.75～2.05GPa，其深度相当于58－67km，平均的地温梯度大约20～24℃/km，说明该区具有异常的热或地温梯度，这可能是导致本区斑岩铜矿形成的主要原因之一；后者的温度和压力都相对较低，分别为1129～1191℃和1.19～1.60Gpa，而相应的深度为39～53km，暗示着玄武岩是在相对低温低压的环境中形成的演化岩浆。

This paper analyzes the principle of the LP-LFC process,presents the physical and mathematical models of mould filling of the new process. The patterns including window-plate, ladders cluster, electromotor frame and exhausting manifolds are poured using LP-LFC process with AZ91D alloy, and the mould filling course is tracked with electrode touch point method. Based on above tests and experiments,the casting defects including short runs, cold laps, trapped gas,metal penetration, and so on, were investigated. The appearance characteristics,birth causes and influence factors of above defects are discussed in the article,diagrammatize modes of the defects forming is also given, and the measures of reducing or avoiding defects are put forward.

本论文分析了低压消失模铸造技术的工艺原理，建立了低压消失模铸造过程中金属液充型的物理和数学模型；在各种工艺条件下浇注了薄板窗体、阶梯模样簇、电机外壳和发动机排气管四个典型的模样和产品，用电极触点法记录了镁合金低压消失模铸造的充型过程；试验研究了镁合金低压消失模铸造中出现的浇不足、冷隔、气孔、粘砂等典型缺陷，分析了这些缺陷的形貌特征、形成原因及影响因素，给出了缺陷形成过程的图解模型，提出了减少和消除缺陷的工艺措施。

To choose a low-stress job or career, it's important to consider what you can and can't abide, according to Andrea Moselle, senior manager of work/life at AstraZeneca Pharmaceuticals."Any job can be stressful or not, depending on how you view it."

要选择一份低压的工作或事业，重要的是要考虑好什么是你能够忍受的以及什么是你不能容忍的，根据AstraZeneca Pharmaceuticals公司的高级经理Andrea Moselle所说：&一份工作有没有压力，关键是看你怎么去看待它。&

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。