蜗轮箱 meaning in English

worm gear case
worm gear cast
worm-gear case

" o " ring of grar box
蜗轮箱o型圈
Oil - seal of gear box
蜗轮箱油封
Bearing of grar box
蜗轮箱轴承
It is provided with worm - gear box regulation to have a more accurate depth of paper press . the blade part is driven by independent gear and adjusted by ratchet wrench . it is also equipped with ruler to shorten the time required for blade adjustment
采用蜗轮箱调节，使压线深度更加准确，刀头部分使用单独齿轮传动，利用棘轮板手调动，并带有长尺，使调刀时间缩短。