useful service life 中文意思是什麼

useful service life 解釋
有效使用壽命
  • useful : adj. 1. 有用的，有益的，有效的，有幫助的。2. 〈俚語〉值得稱贊的，精通…的 （at）。adv. -ly ,-ness n.
  • service : n 塞維斯〈姓氏〉。n 1 服務；工作；公務；職務；事務；業務；行政部門（人員），服務機構（人員）。2 ...
  • life : n （pl lives）1 生命，性命。2 一生；壽命；【原子能】（亞原子粒子的）生命期；使用期限，耐久性。3 ...
  1. Due to the influence of the corrosive agents in the outer environment, the resistance and dynamic reliability of the chemical structures declined with time very fast. and it is difficult for the chemical structures that with the normal design reliability level to fulfil their structural functions. on the condition that the design service life is confirmed, the design reliability level of the chemical structures should include the corrosive environment and its effect on the structures. based on agents ' corrosiveness fuzzy classification, this paper suggests a practical method on design reliability level decision - making of the industrial structures, which is very useful for the anti - corrosion design of the industrial structures

    化工結構由於受到外部腐蝕性介質環境的影響，其承載能力及動態可靠度水平隨使用時間衰減過快，按照普通結構設計可靠度水平設計的工業建築常難以順利完成設計使用功能.因此，在設計基準期預先確定條件下，化工結構的設計可靠度水平應綜合考慮腐蝕性環境及其對建築結構的影響特點來決策.根據介質腐蝕性模糊分級，提出了工業建築設計可靠度水平的一種實用決策方法
  2. In very aggressive environments, the material degradation and structural distress arising from steel corrosion can dramatically reduce the useful service life of structures, affect their strength, stability and safety, and indeed, even lead to premature failure

    在嚴苛的侵蝕性環境下，因鋼筋腐蝕所引起的材料劣化與結構損害，會降低結構壽命，影響其強度、穩定度與安全性，而且導致提前毀壞。
  3. Owners should be allowed to apply for reimbursement of the costs of the remaining useful life of the works which are required by the relevant authorities, including the maintenance or repair works required by the buildings department under the buildings ordinance chapter 123, the provision or improvement of fire service installations or equipment required by the fire services department under the fire safety commercial premises ordinance chapter 502, and the lift works or escalator works required by the electrical and mechanical services department under the lifts and escalators safety ordinance chapter 327, if their properties are eventually acquired by the ura for redevelopment

    倘若業主因應有關監管部門的指令而進行所需工程，而物業最終被市建局收購作重建之用，則業主應可就有關工程餘下的有效期申請發還有關支出款項。上述監管部門規定的工程包括屋宇署根據建築物條例第123條要求進行的樓宇維修或修葺工程消防處根據消防安全商業處所條例第502條要求進行的消防裝置或設備安裝或改善工程，以及機電工程署根據升降機及自動梯安全條例第327條要求進行的升降機工程或自動梯工程。
  4. The service condition of diesel injector nozzle is introduced, the failure reasons of diesel injector nozzle are mainly analyzed, the quality of diesel injector nozzle is improved and the useful life way of diesel injector nozzle is extended

    摘要介紹了噴油嘴偶件的服役條件，分析了噴油嘴偶件失效的原因，對提高噴油嘴偶件質量和延長噴油嘴偶件使用壽命的途徑進行了探討。
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