【摘 要】
：
有些外形较小或内腔腔体体积较小并且检漏合格的电子产品,进行水汽含量测定时有时会出现样品水汽含量超标现象。为证明现行国家标准中粗检漏试验方法(高温氟油加压检漏法)会
论文部分内容阅读
有些外形较小或内腔腔体体积较小并且检漏合格的电子产品,进行水汽含量测定时有时会出现样品水汽含量超标现象。为证明现行国家标准中粗检漏试验方法(高温氟油加压检漏法)会对产品出现误判的问题,通过一系列试验和研究,证明了外形较小或内腔腔体体积较小存在漏孔的电子产品,严格按照现行的粗检漏试验方法中规定的样品在空气中干燥有效时间(2±1)min内进行试验,试验得到了多种结果,进而对产品形成误判,为此对标准中的该试验方法提出了一些新的建议。
Some smaller shape or cavity cavity smaller and qualified electronic products leak detection, moisture content determination sometimes appear when the sample moisture content exceeded. To prove that the current national standard coarse leak test method (high temperature fluorinated oil leak detection method) will be misjudged product problems, through a series of tests and studies have shown that the smaller shape or smaller cavity volume There are leaky electronic products, in strict accordance with the current crude leak test method specified in the sample in the air drying time (2 ± 1) min within the trial, the test has been a variety of results, and then the product misjudgment, To this end the standard in the test method proposed some new suggestions.
其他文献
目的 探讨系统化护理干预对改善戒毒康复期海洛因依赖者生存质量的影响,为开展有效的护理干预提供依据.方法 采取主观抽样的方法,选取符合标准的研究对象156例,按照随机化原
Based on particle approach and tidal flow model this article studies the behavior of the oil slick on the water surface in the Huangpu River, a tidal waterway i
Polypropylene(PP)/MgAl layered double hydroxide(MgAl LDH) nanocomposites were synthesized by refluxing PP and dodecyl sulfate-intercalated MgAl LDH[MgAI(DS)]in
Thiophene adsorption on the Rh(111)surfaces has been investigated by density functional theory.The results show that the adsorption at the hollow and bridge sit
Rapeseed (Brassica campestris L.),a Cd-accumulating crop,is effective in reducing plant-available Cd from soil.A pot experiment was conducted to test the hypoth
Acylation of sterically hindered alcohols is frequently encountered in synthetic chemistry.An efficient and mild procedure for tosylation and esterification of
DNA methylation is a chemical modification of the bases in genomes. This modification, most frequently found at CpG dinucleotides in eukaryotes, has been identi
To evaluate the temporal patterns of N deficiencies in corn and assess the ability of remote sensing to diagnose N deficiencies during the vegetative growth of
A diamine containing ether and ester units,as basic monomer for the preparation of polyamides,was prepared via three consecutive reactions.Nucleophilic substitu
The growth performance of pakchoi (Brassica chinensis L.) in relation to soil cadmium (Cd) fractionations was investigated to evaluate the remediating effect of