It has simple structure, good airtight performance with high vacuum degree, no vortex loss, low cost on production, and no need maintenance.

本发明特点在于结构简单，气密性好，真空度高，无涡流损耗，制作成本低廉，而且不需对其进行专门维护。

youdao

There's also no need to perform any regular maintenance.

没有必要执行任何 日常的维护。

youdao

No longer will you have to fiddle with the complex test scripts that need high maintenance, most often using only semi-automated test tools.

您不再需要在维护复杂的测试脚本上面浪费时间，而是能够在大多数情况下使用半自动的测试工具来帮助您完成相应的操作。

youdao

There is no need to drain lithium batteries fully before recharging, meaning less maintenance, though they are subject to catch fire if overcharged.

CNN: NTSB: Faulty Dreamliner battery was not overcharged

For conventional companies, archives are an expensive problem: they need curating, maintenance, storage space, and no-one can ever judge what will be significant in the future.

BBC: Radio

There is no need to drain lithium-ion batteries fully before recharging, meaning less maintenance, though they can catch fire if overcharged.

CNN: Quick fix for Dreamliner looks less likely, experts say