that permits lifting without any str … - 翻譯

i need to run, but let me dissect a bit for you first. hope it helps.

※ 引述《knes (弱人)》之銘言：
: 請問以下句子
Lifting of the brushes base group with manual control, hydraulic, patented,
that permits the lifting without any stress maintaining always the same
predefined pressure (up to 80 kg). The lowering is controlled with a lever on
the instrument board that acts with the proper speed and without blows.

so...
1. the lifting [of the brushes base group] is a manually controlled mechanism,
2. this mechanism is hydraulic and is patented, and
3. this mechanism allows the lifting [without stress] to be maintained at a pre-
defined pressure. (without this mechanism it would be difficult to control)

hmm...looks like they may have left out the verb for "lifting of..." :)

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