packing gland nut填料函: stuffing box; gland box压盖: gland螺帽: blind nut; nut填料函压盖螺帽 填密函盖螺母: packingglandnut填料函压盖: follower plate; junk ring; packing gland; stuffing box cover; stuffing box gland; stuffing gland下载手机词典可随时随地查词查翻译