[机] bleeding test of greases

rùn huá zhī níng jiāo shōu suō shì yàn ㄖㄨㄣˋ ㄏㄨㄚˊ ㄓ ㄋㄧㄥˊ ㄐㄧㄠ ㄕㄡ ㄙㄨㄛ ㄕˋ ㄧㄢˋ