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Hitachi Construction Machinery Co., Ltd. was established in 1970, and was involved in the production of Japan's first mechanical excavator.The company has now become a major construction equipment manufacturer in the world, and it is listed on the Nikkei 225.
Polarization-division multiplexing (PDM) is a physical layer method for multiplexing signals carried on electromagnetic waves, allowing two channels of information to be transmitted on the same carrier frequency by using waves of two orthogonal polarization states.
Hitachi, a manufacturer of hydraulic construction machinery such as excavators and cranes, gradually increased its share of the joint venture until it owned 100% of the organization by 2000. Hitachi obtained Euclid to fill the gap in their ability to offer a complete mining package, because mining excavators and dump trucks are usually needed ...
Hitachi Rail Italy S.p.A. was a multinational rolling stock manufacturer company based in Pistoia, Italy. Formerly AnsaldoBreda S.p.A., a subsidiary of state-owned Finmeccanica, the company was sold in 2015 to Hitachi Rail of Japan. [2] After the deal was finalized, the current name was adopted in November 2015 to reflect the new ownership. [3]
An early morning Brooklyn apartment fire killed a man and sent two others – including a young boy – to the hospital after firefighters struggled to access a pair of fire hydrants, fire and ...
A tunnel boring machine used to excavate the Gotthard Base Tunnel, Switzerland, the world's longest rail tunnel. An earth pressure balance TBM known as Bertha with a bore diameter of 17.45 meters (57.3 ft) was produced by Hitachi Zosen Corporation in 2013. [40] It was delivered to Seattle, Washington, for its Highway 99 tunnel project. [41]
Hitachi, Ltd. [nb 1] (Japanese pronunciation: [çi̥taꜜtɕi]) is a Japanese multinational conglomerate founded in 1910 and headquartered in Chiyoda, Tokyo.The company is active in various industries, including digital systems, power and renewable energy, railway systems, healthcare products, and financial systems. [4]
Pulse-density modulation, or PDM, is a form of modulation used to represent an analog signal with a binary signal.In a PDM signal, specific amplitude values are not encoded into codewords of pulses of different weight as they would be in pulse-code modulation (PCM); rather, the relative density of the pulses corresponds to the analog signal's amplitude.
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