定价： 481元 / 折扣价： 409 元

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1 Purpose and scope 1.1 This Standard provides classifications and definitions of agricultural field equipment. designed primarily for use in agri cultural operations for the production of food and fiber. 1.2 This Standard is intended to establish unif

定价： 319元 / 折扣价： 272 元

Scope Details test and examination criteria for automatic intermittent pilot ignition systems designed to be adapted to existing continuous pilot burners on listed forced air heating appliances and boilers equipped with atmospheric burners. These syst

定价： 683元 / 折扣价： 581 元

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This standard defines communication modes for Near Field Communication Interface and Protocol (NFCIP 1) using inductive coupled devices operating at the centre frequency of 13,56 MHz for interconnection of computer peripherals. It also defines both the Active and the Passive communication modes of Near Field Communication Interface and Protocol (NFCIP-1) to realize a communication network using Near Field Communication devices for networked products and also for consumer equipment. This standard specifies, in particular, modulation schemes, codings, transfer speeds, and frame format of the RF interface, as well as initialization schemes and conditions required for data collision control during initialization. It also defines a transport protocol including protocol activation and data exchange methods.

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定价： 455元 / 折扣价： 387 元

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