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classificationCode:"ipc:f16n"
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classificationCode:"ipc:f16l"
ABS magnetic ring combined sealing element of automobile hub unit
Floating equipment and method for ocean surface flow field monitoring
PICP dry etching power-off helium leakage detection equipment
Plugging device for petroleum pipeline construction and detection method of plugging device
Sealing ring assembly for vehicle, vehicle and sealing performance detection method
Sheath penetrating device and sheath penetrating process for oval linear array
Sleeve type synchronous lifting assembly capable of sealing in place
Special automatic unhooking and hooking device for acid mist room