换: exchange; barter; trade模: mould; pattern; matrix保持: keep; hold; retain; maintain ...装置: installation; device; appara ...保持装置: holdback掣子保持装置: dog cage assembly跟踪保持装置: track and hold unit功率保持装置: power protection门的保持装置: door holding device载重保持装置: load holding device资料保持装置: data hold自动保持装置: automatic holding device跟踪和保持装置: track and hold unit载重把持法 载重保持装置: loadholdingdevice单偏振模保持光纤: single polarization mode maintaining fiber夹持装置: clamping device; hold device; holding device吸持装置: holding device悬持装置: power lift mechanism支持装置: supporting facility; supportive device轴支持装置: spindle carrier换模装置: die shifter安全握持装置: safety gripping gear工件夹持装置: work holding attachment身体支持装置: body support system硬件支持装置: hardware support device