前言

PerfaceWidely used in clinical practice with better predictability and stability, Photorefractive keratectomy is one of the best methods to treat myopia.

前言 准分子激光角膜切削术已广泛应用于临床，预测性和稳定性较好，是目前治疗近视的最佳手术方法之一。

Our land is a big agricultural land and rural power enterprises play a vital role in China's power industry.

1前言我国是一个农业大国，农村供电企业在我国电力行业占有举足轻重的地位。目前，我国农村电网改造已进入了一个重要时期。

The Si/Al ratio of NaY molecular sieve was determined by an empirical formula of lattice constant obtained by extension function method of X-ray diffraction and framework Si/Al ratio of NaY molecular sieve determined by solid nuclear magnetic resonant spectrum method.

前言晶胞参数是决定晶体结构的重要参数之一，Na Y超稳分子筛属立方晶系，由于 Na Y超稳分子筛骨架硅铝比受许多条件的影响，如投料比、晶化温度、晶化压力和晶化时间等。通过研究发现分子筛骨架的硅铝比与其晶胞参数相关，而分子筛的硅铝比可作为合成分子筛产品质量的控制指标 [1] 。

Using corn powder as material maltose dextrin that DE value was lower than 20 were produced by enzymological method.Water soluable protein and incinerated materials were entered liquefacient corn,It will increase the difficulties of filtration.

前言黑龙江玉米资源丰富，一些企业则以玉米粉为原料，采用酶解法生产低DE值的麦芽糊精，其产品质量与用淀粉为原料生产的产品相似，这种工艺省掉了制淀粉的工序，工艺路线简单，反应条件温和，对设备要求不高，原料价格便宜，从而降低了成本。

There are a dozen Franz Liszt societies and they have produced hundreds of publications.

在该书的前言中提到，「如何在 60 个练习曲中成为大师」，这正是哈农本人所写的。

I. Introduction As China's national economic development and people's living standards improved.

一、前言随着我国国民经济的发展和人民生活水平的不断提高。

The oxidation stability of lubricating oil is one of the most important characters.

0前言润滑油的氧化安定性是其最重要的性质之一。

Kevin MacDonald's Preface to the paperback edition of his Culture of Critique , online at his website .

教授凯文麦克唐纳德的前言平装本的自己的文化的批判，在网上他的网站。

The basis of modern mammalogy before liberation was completely destroyed, because of the Anti-Japanese War.

一、前言对近代的兽类学来说，我国虽然从本世纪二十年代即已开始分类研究，三十年代也有了生态学的论文，但是经过抗日战争的破坏，新中国建立之始，实际上处于空白状态。

Preface: The origin of aesthetic ideas of Schiler and Marcuse in history.

前言部分：席勒、马尔库塞审美乌托邦思想的历史由来。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。