Thermal fatigue life of lead-free solder joint of Air-conditioner PCB (Printed Circuit Board) under the form of THT (Through Hole Technology) is studied.
本文对空调器印刷电路板(PCB)通孔插装形式无铅焊点的热疲劳寿命进行了研究。
At the present, there are mainly Dunlop and Talalay protection technologies for latex pillow, which is more permeable than any other pillows by virtue of honeycomb air hole technology.
乳胶枕目前主要有邓禄普工艺与塔拉蕾生产工艺，因其蜂窝状气孔工艺，乳胶枕较其他枕头更为透气。
In the case of Oxford Nanopore's technology, the DNA molecule is fed through the hole one base at a time by a second protein, an enzyme called an exonuclease.
就牛津大学的纳米孔技术而言，DNA分子依靠第二种蛋白质以一次一个碱基的速度通过小孔。这个蛋白质是一种被称为核酸外切酶的酶。
Modern technology has created some thorny problems (Can a particle accelerator open up a cataclysmic black hole that will destroy the Earth?
现代技术往往产生一些难以两全的棘手问题。 你认为，粒子加速器是否能揭开据称将毁灭地球的黑洞秘密吗？
Host security is becoming an urgent problem that every computer user has to face. Host hole scanning technique is an important security technology to provide security guarantee for host.
主机安全正成为每一个计算机用户都面临的紧迫问题，主机漏洞扫描技术就是为主机安全提供保证的一项重要的安全技术。
These research results have laid a foundation for further study of the theory and technology of film hole irrigation.
该项成果为膜孔灌溉理论与技术的进一步研究奠定了基础。
Millisecond delay technology of high step and deep hole is the first application in China, it offers a realistic method for high step exploitation of middle and small scale limestone mine.
高台段深孔孔内微差爆破技术在我国的首次应用，为中小型石灰石矿山高台段开采提供了切实可行的方法。
Combined practice, the technology difficulties of sheet forgings with inner hole were introduced, for which the optimized design of dies for punching and cutting for top-plate forging was put forward.
结合实际，介绍了带内孔的薄板锻件的工艺难点，并就此工艺难点的解决介绍了锻件切边、冲孔模具的优化设计。
The research results have laid a foundation for further study of the theory and technology of film hole irrigation.
该研究成果为膜孔灌理论与技术研究奠定了基础。
According to this problem, casing oil stolen prevention sealing valve was developed, matching with down-hole oil-gas separator and gas lift valve lift technology.
针对这一难题，研制了套管防盗油密封阀，并配套应用了井下油气分离器与气举阀助流举升工艺技术。
These research results have laid a foundation for further study of the theory and technology of filmed hole irrigation.
该研究成果为膜孔灌溉理论与技术的进一步研究奠定了基础。
The paper described the processing technology of requiring and complicated hole of the structure in high accuracy, introduced the design to process this jig and its manufacture.
论述了有较高精度要求且结构复杂孔的加工工艺，介绍加工该零件钻孔模具的设计及制作过程。
The application of thermoplastics with small hole injection molding technology in TV 's covers is introduced.
论述热塑性塑料微孔注射成型技术在电视机外壳上的应用。
The PCB NC drilling machine is key technology equipment in the PCB's precise hole site processing.
印制电路板（PCB）数控钻床是印制电路板精密孔位加工关键的工艺装备。
The blasting similarity theory, blasting parameters and technology applied in mining ores by bunch hole are introduced.
介绍了束状孔落矿工艺中采用爆破相似理论，试验的爆破参数和工艺。
Conductive thread of a hole without cutting tapping new technology to solve the past conductive thread easily slip teeth of the defects.
导电件螺纹孔采用无切削攻丝新工艺，解决了已往导电件螺纹容易滑牙的缺陷。
By research on the middleware technology and vulnerability detection technology, this paper presents an architecture of security hole detection middleware.
论文通过对漏洞检测技术和中间件技术的研究，结合两者的特点，提出了一个漏洞检测中间件的系统结构。
The pile supporting capacity can be raised 50% after using man-power hole pile mud jacking technology.
采用人工挖孔桩桩端后压浆技术能使桩承载力提高50%。
Therefore, this thesis did thorough researches in allusion to the problems of making hole processing technology in the composite armor and optimizing craft parameters when it was in mass production.
因此，论文主要研究面向批量生产时复合装甲制孔加工工艺和工艺参数优化问题。
Based on summarizing machining technology of deep and small hole, an introduction about most advanced technology and internal research is given.
对分析总结了国内外小直径深孔加工技术，介绍了当前孔加工的最新技术和国内在这方面的研究情况。
The main cylinder of hydraulic press is ground by self-made belt grinding device. The method supplys grinding of deep blind hole a economic and reliable technology.
本文阐述了利用自制的砂带磨削装置，对液压机主缸内孔行进磨削加工。该方法为深盲孔的磨削加工提供了经济可靠的工艺方法。
Introduce the basic principles, equipments, techniques and spot experimental conditions of expanded hole of technology of rotation jet.
介绍了旋转射流扩孔技术的基本原理、设备、工艺以及现场的试验情况。
Considering the climate and the geological structure of Guangzhou, this article makes an exhaustive analysis of the feasibility of the horizontal frozen-hole construction technology.
文章结合广州地区气候特点和工程地质特点，详尽分析了水平冻结孔施工技术在广州地铁折返线斜穿广汕公路和沙河立交桥的应用可行性。
Since 1995, sidetracking operations have been conducted in Zhongyuan Oilfield, and a set of perfect slim hole sidetracking technology has been formed.
中原油田自1995年以来开始进行了老井开窗侧钻小眼井技术，数年的努力形成了一套完善工艺。
Directional engineering hole drilling technology is a new technology in drilling engineering projects.
工程孔定向钻进技术是钻探工程的一项新技术。
Standard surface-mount technology or through-hole techniques provide adequate performance.
标准表面贴装技术或通孔技术提供足够的性能。
The test results show that the technology of vertical deep hole presplitting blast is a feasible method in Shi Rengou Iron Mine.
在石人沟铁矿的试验结果表明采用垂直深孔预裂爆破技术在该矿是一种可行方案。
Based on a practical project, the relationship between construction technology and cost control for deep-hole blasting is discussed.
以工程实践为基础，对深孔爆破的成本控制与施工方法、技术的关系进行了探讨。
This paper introduces the criterion of selecting pump, detonation mode, principle and action of inner blind hole perforator and tubing pump joint technology.
介绍了内盲孔射孔器与管式泵联作技术的选泵标准、起爆方式、原理和流程以及内盲孔射孔器的研制。
This paper introduces the criterion of selecting pump, detonation mode, principle and action of inner blind hole perforator and tubing pump joint technology.
介绍了内盲孔射孔器与管式泵联作技术的选泵标准、起爆方式、原理和流程以及内盲孔射孔器的研制。
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