It was proved by the experiments that to supplement 50mg lutein per day for approximately 140 days can make the density of macular pigment quickly reach the relatively balanced level.

试验证明，每天补充50毫克叶黄素，可以在140天左右让黄斑色素密度快速达到相对平衡水平。

youdao

The compressor is balanced so that, in most cases, the compressor can be run on a high-density rubber pad, and does not require a special foundation.

压缩机经平衡设计，振动小，不需要特别的基础，在某些场合，甚至可以在高密度橡胶衬垫上运行。

youdao

The compressor is balanced so that, in most cases, the compressor can be run on a high-density rubber pad, and does not require a special foundation.

压缩机经平衡设计，振动小，不需要特别的基础，在某些场合，甚至可以在高密度橡胶衬垫上运行。

youdao