使用壽命 application life; calendar life; in service life; in-service life; length of life; life cycle; life length; life time=lifetime; life-span; longevity; operating life; operation life; operational life proof cycle; operational life span; operational lifetime; service lifetime; service limit; serviceable life; useful life; useful physical life; useful time; using life; working life
By carefully selecting the voltage taps , the correct voltage output to match the resistance of the elements over their complete useful life can be made 仔細選擇電壓插孔,選擇和電阻相匹配的輸出電壓值,這樣可以延長其有效使用壽命。
By means of practical experiences in sacrificial anode sets and through calculation , the top best combination of sacrificial anode sets is determined , which obtains a balance between the effective service life of sacrificial anode sets , coating and pipeline to be protected 結合實際應用經驗,通過理論計算,比選出最佳組合,使犧牲陽極組的有效使用壽命與覆蓋層和被保護管道相匹配。
What ' s more , our enthusiasm for new products is encouraging what the writer giles slade calls " planned obsolescence " the tendency of manufacturers to artificially limit the useful lifespan of their products so consumers will soon have to replace them 更嚴重的是,我們對于新產品的熱情促進了作家吉爾思.史萊德所謂的"計劃性淘汰"的產生.商家們人為的限制其產品的有效使用壽命這個傾向促使消費者不得不頻繁更換它們