Ram-type blow out preventer is important equipment used in oil drilling operations. Variable bore ram-type blowout preventer, as a improved type, is capable of sealing around drill pipes with a range of sizes and have advantanges such as low cost and convenience, expatiate on the sealing well mechanism, this paper discusses the structural characterstics of several typres fo variable bore ram, the operation of the varialble bore ram is simulated with the finite element model. the distribution of the stress is analysed, which provides the toudation for optinizing the design of variable bore ram-type blowout preventer
Features:
Capacity: mb, mb, mb, gb, gb
Complies with sd standards
Versatile: when combined with the included adapter, it can be used as a full-size sd card
Interoperable with sd slot via sd adapter and trans flash - enabled devices
Dimensions: x x mm ( x x mm)
Speed rating: . Mbps read speed, . Mbps write speed
Operating temperature
Storage temperature
Weight: . Lbs ( . G)
Portable, extremely small footprint design.
9 into a new, genuine product apart, test OK
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PCBA Dimension 92x60mm
Reference Weight 48g
Brief Introduction Engieering Developmnet PCBA
Chipset Chipset Realtek RTD1395 ARM Cortex-A53 Quad-Core 64 Bit
Architecture A53 x4,
GPU Mali 470 MP4 GPU OpenGL ES 1.1/2.0
Frequency 1.4GHz
System OS System OS Android and Linux
OSD Multi-Language Yes
RAM Density 2 GB
Flash Density 8G eMMC flash onboard,up to 64GB
Network Ethernet 10/100 Mbit/s Ethernet
WIFI 2.4GH/5G WiFi 802.11 b/g/n/ac
Bluetooth Bluetooth 4.2
Video Out HDMI port Encoding Full HD with H.264 format
Decoding 4K/2K H.265,Full HD MPEG1/2/4/H.264/H.264 MVC, AVC/VC-1,VP8,VP9,AVS,AVS plus,HD JPEG,etc.
Audio Out 3.5mm Ear Jack WAV,MP3,MP2,AAC,AMR-NB,AMR-WB,MIDI,Vorbis,APE, AAC-plusv1/2,FLAC,WMA,ADPCM
HDMI
Connector Slot Type C USB (2.0) x1
TYPE A USB(2.0) Ã??4
MicroSD Ã??1,Upmost 256GB expansion
RJ45 x1
HDMI x1
Earphone Jack,3.5mm Ã??1
Other Interface GPIO GPIO (x28) 40 Pin Header, Suppoort Power (+5V, +3.3V and GND) for UART, I2C, SPI or PWM
Switch Function Swtich Reset, Power and U-boot
LED Indicator Power Status and Activity status
Power Input 5 volt @2A via TYPE C
Certification CE/FCC Compatible
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