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