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外文文献原稿和译文

原 稿

Sodium Polyacrylate:

Also known as super-absorbent or “SAP”(super absorbent polymer), Kimberly Clark

used to call it SAM (super absorbent material). It is typically used in fine granular form

(like table salt). It helps improve capacity for better retention in a disposable diaper,

allowing the product to be thinner with improved performance and less usage of pine fluff

pulp. The molecular structure of the polyacrylate has sodium carboxylate groups hanging

off the main chain. When it comes in contact with water, the sodium detaches itself, leaving

only carboxylions. Being negatively charged, these ions repel one another so that the

polymer also has cross-links, which effectively leads to a three-dimensional structure. It has

hige molecular weight of more than a million; thus, instead of getting dissolved, it solidifies

外文翻译及原文

(文档含英文原文和中文翻译)

【原文一】

CONCURRENT DESIGN OF PLASTICS INJECTION MOULDS

Abstract

The plastic product manufacturing industry has been growing rapidly in recent years. One of the

most popular processes for making plastic parts is injection moulding. The design of injection

mould is critically important to product quality and efficient product processing.

Mould-making companies, who wish to maintain the competitive edge, desire to shorten both

design and manufacturing leading times of the by applying a systematic mould design process.

The mould industry is an important support industry during the product development process,

serving as an important link between the product designer and manufacturer. Product

development has changed from the traditional serial process of design, followed by manufacture,

兰州交通大学毕业设计（外文文献翻译）

- 1 -

A Distributed Approach for Track Occupancy Detection

Abstract

This paper investigates the problem of track occupancy detection in distributed settings.

Track occupancy detection determines which tracks are occupied in a railway system. For

each track, the Neyman–Pearson structure is applied to reach the local decision. Globally, it is

a multiple hypotheses testing problem. The Bayesian approach is employed to minimize the

probability of the global decision error. Based on the prior probabilities of multiple

hypotheses and the approximation of the prior probabilities of multiple hypotheses and the

approximationofthereceiving operation characteristic curve of the local detector, a

person-by-person optimization method is implemented to obtain the fusion rule and the local

strategies off line. The results are illustrated through an example constructed from in situ

中英文对照外文翻译

(文档含英文原文和中文翻译)

原文:

Safety Assurance for Challenging Geotechnical Civil

Engineering Constructions in Urban Areas

Abstract

Safety is the most important aspect during design, construction and service time

of any structure, especially for challenging projects like high-rise buildings and

tunnels in urban areas. A high level design considering the soil-structure interaction,

based on a qualified soil investigation is required for a safe and optimised design. Due

to the complexity of geotechnical constructions the safety assurance guaranteed by the

4-eye-principle is essential. The 4-eye-principle consists of an independent peer

review by publicly certified experts combined with the observational method. The

paper presents the fundamental aspects of safety assurance by the 4-eye-principle. The