常見例句雙語例句Through non-linear finite analysis , the dependence of fatigue life of solder joint on thermomechanical properties of underfill was calculated.通過非線性有限元分析，計算出銲點疲勞壽命對下部填充料基本熱力學(xué)性質(zhì)的依賴關(guān)系。Research progress of lead-free solder, invalidation models of solder joint, solder joint reliability evaluation and the defects of solder joints in recent years have been reviewed.筆者就近年來國內(nèi)外開發(fā)的無鉛銲料、銲點的失傚模式、銲點可靠性評價方法和銲點的主要缺陷進行了綜述；The solder will be dull looking and if the gold content in the solder exceeds about5% the solder joint will be brittle.銲點外觀將變得暗淡，此外，如果銲料中的金成分超過約5%時，銲點將會變脆。 返回 solder joint