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  2. Harbin Z-20 - Wikipedia

    en.wikipedia.org/wiki/Harbin_Z-20

    [2] [3] The Z-20 can operate from locations above 4,000 m (13,000 ft) in altitude as well as from the Liaoning aircraft carrier. [4] [5] It is regarded to be comparable in performance to the US-made Sikorsky UH-60 Black Hawk helicopter, of which the civilian Sikorsky S-70C-2 variant has been used by the People's Liberation Army since 1984. [6]

  3. List of copy protection schemes - Wikipedia

    en.wikipedia.org/wiki/List_of_copy_protection...

    A file with activation key that needs to be installed in same directory as software; similarly, a disc media (often installation disc) may be required as key disk for activation. [1] Code Morphing Hiding intermediate code by means of code obfuscation so that execution logic is not visible. This method does not protect against runtime tracing. [2]

  4. Product activation - Wikipedia

    en.wikipedia.org/wiki/Product_activation

    Product activation is a license validation procedure required by some proprietary software programs. Product activation prevents unlimited free use of copied or replicated software. Unactivated software refuses to fully function until it determines whether it is authorized to fully function. Activation allows the software to stop blocking its use.

  5. Product key - Wikipedia

    en.wikipedia.org/wiki/Product_key

    Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters.

  6. Software cracking - Wikipedia

    en.wikipedia.org/wiki/Software_cracking

    Software cracking (known as "breaking" mostly in the 1980s [1]) is an act of removing copy protection from a software. [2] Copy protection can be removed by applying a specific crack. A crack can mean any tool that enables breaking software protection, a stolen product key, or guessed password. Cracking software generally involves circumventing ...

  7. List of aircraft produced by China - Wikipedia

    en.wikipedia.org/wiki/List_of_aircraft_produced...

    GJ-2: Chinese domestic military designation. Wing Loong 2: Developed from Wing Loong-1, with provisions for up to twelve air-to-surface missiles Wing Loong 2H: Civilian, communication, emergency response variant, equipped with synthetic aperture radar and optoelectronic pod which is able to relay and amplify telecommunication signals.

  8. Software copyright in China - Wikipedia

    en.wikipedia.org/wiki/Software_copyright_in_China

    Article 14. The software copyright owner can transfer contracts or consent to contract applications to the Chinese copyright protection center for contract registrations. The materials they must submit are: 1. Completed contract registration form; 2. A hard copy of the contract; 3. Identity document of the Applicant. Article 15.

  9. List of aircraft by tail number - Wikipedia

    en.wikipedia.org/wiki/List_of_aircraft_by_tail...

    This list is only of aircraft that have an article, indexed by aircraft registration "tail number" (civil registration or military serial number). The list includes aircraft that are notable either as an individual aircraft or have been involved in a notable accident or incident or are linked to a person notable enough to have a stand-alone Wikipedia article.