Large scale enhanced the lamp tube service life, international still did not have the precedent.

大幅度地提高了灯管的使用寿命，国际尚无先例。

youdao

Large scale enhanced the lamp tube service life, international still did not have the precedent.

大幅度地提高了灯管的使用寿命，国际尚无先例。

youdao