Maintenance-free brushless drive motor with frequency inversion, has high start torque and short acceleration time.

免维护高力矩无刷变频电机直接驱动，启动力矩大、加速时间短。

youdao

These batteries are sealed, maintenance-free components containing substances that are harmful to health and a source of environmental pollution.

该电池为密封的免维护部件，内部装有危害人体健康并可造成环境污染的物质。

youdao

"Almost every material implemented in this home was done so to create a maintenance-free space that withstands the weather and betters with age," the architects said.

“几乎每种材料在这间屋子都有体现，这是为了创造可以抵抗各种天气和时间且不需维修的空间。”建筑师说道。

youdao

His maintenance-free bike uses a "secret" mix of organic materials to make it waterproof and fireproof, and is then lacquered to give it a friendlier appearance.

ENGADGET: Cardboard bicycle 'close to mass production': tough, green and just $20

This helps it land at No. 2 on the list, despite BMW's fairly comprehensive free scheduled-maintenance program for all models.

FORBES: Most Expensive Cars To Drive

To allay concerns about reliability--Fiats still rank near the bottom of owner-satisfaction surveys in Europe, and "Fix It Again Tony" remains lodged in the memory of potential American buyers--Fiat has included a 50, 000-mile warranty on the 500 and free maintenance for three years.

FORBES: On The Cover/Top Stories