Shape prediction and reliability analysis of QFP solder joint

  • QFP焊点形态预测及可靠性分析
  • 来源:互联网摘选更新时间:2025-01-20 17:38:54

  • 重点词汇
  • andconj. 和,与;而且;于是,然后;因此;
  • analysisn.分析,分解;梗概,要略;[数]解析;验定;
  • soldern.焊料,焊锡;
  • QFP四面扁平封装;
  • jointadj.共同的,联合的;共享的;两院的;连带的,共同的;
  • shapen.形状,图形;模糊的影子;状况;特点;
  • predictionn.[气]预测,预报;预言;预言的事物;
  • ofprep. 关于;属于…的;由…制成;
  • 相关例句
1、

Conclusion: QLG has protective effect on immunologic liver injury induced by BCG plus LPS, which might be related with anti-lipid peroxidation.

结论:QL对BCG加LPS致小鼠免疫性肝损伤有保护作用。其护肝作用与抗脂质过氧化等因素有关。

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2、

Application of QFT in Longitudinal Automatic Landing Control System Design

QFT在飞机纵向着陆控制中的应用

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3、

Design and Analysis of QFT Controller Based on Matlab Language

基于Matlab语言定量反馈控制器的分析与设计

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4、

Application of QFT in Design of Underwater Vehicle Control System

QFT在水下潜器控制系统设计中的应用

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5、

Study on QFT Design Method and Application Applying Sampled-data Control Theory

基于采样控制系统直接设计理论的QFT设计方法及应用研究

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6、

Design and analysis of stabilized aiming control system based on QFT

基于QFT的光电稳定控制系统设计与分析

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7、

The principle and design process of QFT were presented.

分析和总结了定量反馈理论的基本原理和设计过程。

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8、

The aircraft's longitudinal motion short period poles and long period zeros in right plane may make the aircraft control system be not got by only using QFT.

飞机纵向运动方程的短周期和长周期的右半平面可能存在零极点对问题,这对飞机控制造成不利影响,直接利用定量反馈理论不能满足要求。

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9、

Methods QOL of 260 patients with CHB and 260 healthy controls were evaluated by Mos SF 36, and QLI scores, single and multiple stepwise regression analysis were made to assess the factors affecting QLI.

方法采用SF36量表,对260例慢性乙型肝炎患者和260例正常对照进行QOL测量与评价,并对QOL的影响因素进行单因素分析和多因素逐步回归分析。

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10、

Result ( 1) The Chinese version of the QLI with 3-point scale ( QLI 3) had relatively adequate reliability, validity, sensitivity and feasibility when used in the Chinese cancer patients;

结果:初表表明(1)QLI量表中文版(3点量表,QLI3)具有良好的信度、效度、灵敏度及适用性,可以应用于中国癌症人群;

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11、

All the patients were measured by self rating depression scale ( SDS), self rating anxiety scale ( SAS), and quality of life questionnaire core 30 ( QLQ C30), which were as measuring standards before and after home visiting.

并应用焦虑自评量表(SAS)、抑郁自评量表(SDS)及恶性肿瘤患者生活质量问卷(QLQ C30),作为家庭访视前后的测评标准。

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12、

Conclusion: the concurrent chemoradiotherapy can improve the near quality of life of NSCLC patients. The age, culture level, gender, near effect is the main influence of QLQ of NSCLC patients.

结论:同期放化疗能够在一定程度上改善晚期非小细胞肺癌患者的近期生活质量,年龄、文化程度、民族、治疗效果是影响生活质量的主要因素。

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13、

The EORTC questionnaire QLQ C-30 together with OES-18 were applied to evaluate the short-term QOL of the patients before and after operation.

采用欧洲癌症研究与治疗组织(EORTC)开发的生活质量量表(QLQ)核心量表(C-30)和食管癌补充量表(OES-18)评价患者术前和术后的生活质量。

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15、
16、

Compared with its domestic and overseas counterparts, QLT 17 possessed superior processability and physical properties, such as tensile strength of 13.8 MPa, elongation rate 653% and dielectric constant 2.2 at 50 Hz.

与国内外同类树脂相比,QLT17具有优良的物理性能和加工性能,拉伸强度为13.8MPa,断裂伸长率为653%,介电常数(50Hz)为2.2。

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17、

The application of the PE speciality resin indicates that QLT 17 is a kind of basic resin with excellent performance suitable for power cable.

推广应用表明,QLT17是一种性能优异的交联PE电缆用基础树脂。

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18、

Conclusion: QLT possesses a good defervescence effect and can markedly alleviate clinical symptoms.

结论:清气凉营汤有良好的退热效果,而且还能明显减轻临床症状。

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19、

The synthetic aperture radar ( SAR) image terrain classification algorithm combining the respective characteristics of Beta-prime ( BP) statistic model and quadratic Gamma discrimination ( QGD) classifier is presented.

本文融合了Beta prime(BP)统计模型和QuadraticGammadiscrimination(QGD)分类器各自的优点,给出了一个完整的合成孔径雷达(SAR)图像地物分类算法。

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20、

Two types of perforated shims for vibration isolation QGD 1 and QGD 2 are developed for piping clamps and mounts of machines in marine vessel.

为适应我国舰船减振降噪的需要,试制出QGD-1和QGD-2两种穿孔型隔振垫,主要用于管路马脚,也可用于基座等振动部位。

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