采样

The result was that themean burst period of original and large eddies was the same.

应用三种常用的条件采样方法分别对湍流原始信号和分解后的大涡信号进行了条件采样以检测猝发。

Methods:Twenty-four patients with CTD during the corticosteroid therapy suspected of pulmonary infections according to the clinical manifestations and X-ray features were enrolled into the study of etiological sampling via FB randomly and prospectively.Etiological diagnosis via common expectorated sputum from 20 of them was designed as self control group.

对确诊为结缔组织疾病且应用糖皮质激素治疗，临床症状及胸部X线表现拟诊为肺部感染24例，采用随机前瞻性的经FB病原学采样研究，同时对其中的20例行普通咳痰病原学采样诊断的对比观察。

Minifying digital images used downsampling introduces aliasing noise .

在降采样过程中不可避免地会引入欠采样噪声。

First the depth information is employed to reconstruct space planes from individual reference images and the potential occluding relationship between these planes is calculated.

首先通过参考图像的深度信息来重建三维平面，然后寻找这些重建平面间的对应关系，并比较它们对空间平面同一部分的采样密度，以获得最好的采样结果。

DPCM quantizes and encodes the difference between signal sampling and predictive value,thereby eliminating the correlation between sample values.

DPCM对信号采样值和信号预测值之间的差值进行量化与编码，从而消除了采样值之间的相关性。

The speech signal is a analog one, and we can perform its digital transmission by sampling, quantizing and coding.

话音信号是一个模拟信号，通过采样，量化和编码，话音信号是一个模拟信号，通过采样，量化和编码，我们可以实现话音信号的数字传输。

Soil sampling is carried on on the typical slopes, and the mountain slope location that is being researched is divided into three parts: upper slope, middle slope, lower slope, and three land use ways are selected respectively in each slope location(altitude, slope gradient and aspect are same on the whole): farm land,, reforested land, waste land are taken as sampling sites.

土壤采样选取典型坡面进行，把研究的山体坡位分为3个部分：上坡位、中坡位、下坡位，在每个坡位(海拔高度、坡度及坡向基本一致)分别选取3种土地利用方式：坡耕地、人工林、荒草地作为采样点。

Because soil vapor extraction technology and air sparging technology mainly depend on physical mechanisms, such as basic computation of fluid dynamics, the expected results are often obtained if one can control the required variables.

本论文主要针对国内已完成整治加油站污染场址，经由场址背景资料汇整与场址采用整治方式之适切性及其成效做探讨，分析几个影响整治成果之因素，包括采样位置、污染时间、地下水位等，进一步选定常见的土壤气体抽除法及空气注入法成功案例评析，而依据各场址整治流程发现，整治工法能否成功，掌握改善作业之关键点因素是最重要的部分，如场址特徵，污染物扩散情形、土壤质地，及是否适合现地整治等，由於土壤气体抽除法及空气注入法之整治方式，主要为物理性机制，牵涉到一些基本流体力学的计算，只要掌握足够之变数因子，利用推导方式，设置适合之整治井数量，通常应能获得预期之成效，但前提仍是现地场址的特性调查须完整，如此推导之结果才具有足够之可信度，由於国内整治计画及成果报告内容中，针对污染场址所施行工法的设计参数资料大多仅略述，仅将重点放在整治后采样之数据上，因此往往其整治成效在理论推导上较缺乏支持。

Two type pollutants caused atmosphere pollution,may be dangerous to environment,human body,animal,plant,apparatus and material.This article based on the atmosphere pollution of modern solid waste landfill and taken sulfureted hydrogen,ammonia and methyl mercaptan etc.as monitoring objectives,summarized the scheme of atmosphere pollution monitoring for solid waste landfill according to the practice experience,which including the principle,frequency,time,method of sample collection and analysis technology.Thi...

造成垃圾填埋场大气污染的两大类污染物，其对环境、人体、动植物、器物和材料都有一定的危害，文章针对现代垃圾填埋场的大气环境污染，以硫化氢、氨、甲硫醇等重点大气污染因子为监测对象，结合实践总结了一部分垃圾填埋场的大气污染监测方案，包括布点原则、采样频率和时间、采样方法和分析技术，该监测方案可为现代垃圾填埋场的大气污染监测提供参考。

Results The linearity range was 5~500μg/mi. The linear regression formula was Y=5.9601 X -1.643, r=0.9998. The limit of detection was 0.5μg/ml. The minimum detectable concentration was 0.04mg/m^3 (60 L sampling volume). The sampling efficiency was 100%. The sample could store at least 5 days in absorption pipette.

结果 所建方法的线性范围5~500μg/ml，回归方程Y=5.9601 X-1.643，r=0.9998；方法检出限0.5μg/ml，最低检测浓度为0.04mg/立方公尺（采样体积60L计）；采样效率达100%；样品在吸收管中可稳定5d。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。