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本標準規定了機座外徑不大于90 mm的電子類家用電器用電動機的產品分類、技術要求和試驗方法、檢驗規則、交付準備等。 本標準適用于DVD錄放機、錄音機、攝像機、照相機、微波爐、取暖器、電子玩具、剃須刀、程控器、CPU風扇、手機等電子類家用電器電動機如交流感應電動機、串激電動機、永磁直流電動機、無刷直流電動機、同步電動機、超聲波電動機、步進電動機等。本標準也適用于不用機座外徑表示機座號的其他結構型式電子類家用電器用電動機。 機座外徑大于90 mm的電子類家用電器用電動機亦可參照采用本標準。 本標準應與電子類家用電器用電動機(以下簡稱電機)產品專用技術條件一起使用。各類電機的具體技術指標及附加或特殊要求在產品專用技術條件中規定。
本標準規定了煤炭地質鉆探工作野外作業工藝技術要求和安全生產要求。本標準適用于在中華人民共和國領域內的煤炭地質鉆探工作設計、生產和安全評價、管理。標準不適用于使用煤炭地質鉆探技術手段和方法從事其延伸業的設計、生產和安全評價、管理。
YY/T 0873的本部分用于闡明牙科旋轉器械及其附件的數字編碼系統,并就其解釋和用法給予說明。本部分將詳細說明幾類材質的編碼系統,包括器械工作部分、涂層及研磨器具的結合方式。本部分的3位數字即為15位編碼系統中的第1組數。本部分還進一步說明了桿/柄或獨立使用的器械的孔徑,以及總長度的編碼數字。此處的3位數字組成了15位編碼的第2組,且一共有3位(2+1)。附錄A舉出幾個例子示范了15位編碼數字的完整應用,其中部分例子包括了為金剛石器械提供的3個(額外)可選數字(16~18位)的例子。
本標準規定了口腔醫療保健人員工作區域內牙科設備位置信息系統,在這些工作區域內可以進行直接和患者有關的診斷、治療和其他臨床操作。本信息系統提供了描述牙科設備所處位置一般信息的方法,以及描述該設備及其附件空間的靈活性和適應性特征的方法。此外,本標準提供了該區域所使用的牙科設備一般術語的定義。
本標準規定了航天器(含艙段,以下同)的包裝原則、包裝技術支持、包裝技術要求、包裝技術流程、包裝容器、包裝件的試驗方法和檢驗規則。本標準適用于各類航天器的包裝及包裝箱的設計、制造、試驗和驗收。
YC/T 284的本部分規定了煙草企業安全生產標準化的安全技術和現場規范要求,包括設備設施、作業活動、作業環境和現場運行的安全要求。本部分適用于省級煙草公司(局)、省級工業公司等省級公司、煙草加工和煙草商業生產經營單位。其中,煙草商業生產經營單位特指地市級煙草公司,煙草加工單位含煙葉復烤、卷煙制造、雪茄煙制造、再造煙葉生產的單位。煙草配套和多元化投資的其他生產經營單位,如醋酸纖維、煙草印刷等單位可參照執行。
本規范適用于各類通信建設工程項目的施工、監理、監督檢查。本規范與有關標準(規范)相矛盾時,應按標準(規范)的相關規定辦理。
本部分適用于新建、擴建和改建的火力發電工程建設項目(含核電站常規島)建筑、安裝、調試等安全生產工作。
IMT-2000 defines 3rd generation mobile systems which are scheduled to start service around the year 2000 subject to market considerations. They will provide access, by means of one or more radio links, to a wide range of telecommunication services support
This Recommendation describes the means by which audio, video, data, and control are associated, coded, and packetized for transport between H.323 equipment on a packet-based network. This includes the use of an H.323 gateway, which inturn may be connected to H.320, H.324, or H.310/H.321 terminals on N-ISDN, GSTN, or B-ISDN respectively. The equipment descriptions and procedures are described in ITU-T Rec. H.323 while this Recommendation covers protocols and message formats. Communication via an H.323 gateway to an H.322 gateway for guaranteed Quality of Service (QoS) LANs and thusto H.322 endpoints is also possible.
This Recommendation specifies the media aspects of the interfaces between IPCablecom clientdevices for audio and video communication. Specifically, it identifies the audio and video codecsnecessary to provide the highest quality and the most resource-efficient service delivery to thecustomer. This Recommendation also specifies the performance required in client devices tosupport future IPCablecom codecs. Additionally, this Recommendation describes a suggestedmethodology for optimal network support for codecs.1.1 Introduction and overviewThe quality of audio and video delivered over the IPCablecom architecture will depend on multiplefactors: the end device performance, the network's inherent quality, and the intelligence of thesystem resource allocation policy. This Recommendation specifies codecs and capabilitiessupporting audio and video applications, with a particular emphasis on the stringent requirements ofIP-based voice communications.Acceptable voice communications functionality imposes strict delay and packet-loss criteria on IPimplementations and will thus stress system resources, particularly if bandwidth becomes congestedor saturated. Video applications – while more forgiving to dropped packets and delay – requirebandwidth of at least an order of magnitude more than audio applications. The IPCablecomarchitecture is designed to support both voice and video applications simultaneously.Speech and video compression are evolving technologies. New algorithms are being enabled as moresophisticated and higher performing processors become available at lower cost. Additionally, thesystem infrastructure and mechanisms for allocating resources will evolve. Due to this dynamism, thepriority in designing the architecture is to define a robust system to accommodate evolvingtechnology without creating a legacy burden.Therefore, the IPCablecom philosophy is to establish cost-effective envelopes for network and deviceperformance to enable the most appropriate current technology, while allowing upgrades astechnology and market needs evolve. To address near-term market needs, this Recommendation alsospecifies codec and performance mandates to deliver the quality-of-service necessary for launchingcompetitive services.1.2 Purpose of this RecommendationThe purpose of this Recommendation is to extend the existing IPCablecom v1CodecRecommendation by introducing two new low-bit codecs, [ITU-T T.38] fax relay for reliable faxtransmission, [IETF RFC 2833] DTMF Relay for reliable DTMF transmission and metrics tomeasure voice quality. It is issued to facilitate design and field-testing leading to themanufacturability and interoperability of conforming hardware and software by multiple vendors.1.3 Phasing of requirementsThe codec requirements contained in this Recommendation cover both audio and video multimediaterminals (MTAs) and trunking gateways (media gateway). The term MTA-2 is used to define aterminal supporting video.In the initial phase of IPCablecom, MTAs are not required to support the MTA-2 requirements asdefined in clause 8. MTAs MUST support the requirements for audio terminals as defined inclauses 5, 6, 7, and 9.Support for video terminals will be REQUIRED in later phases of IPCablecom. All MTA-2s MUSTsupport the requirements defined in clause 8.
This Supplement is an \"information\" document and is intended as a roadmap and a source of references for documents related to IMT-2000 specifications from ITU-T as well as fi-om sources outside ITU (e.g. 3GPPs and SDOs.) The list of documents contained in
This European Standard deals with the safety requirements for the following types of power-operated storage equipment: storage carousels; storage lifts; mobile shelving, pallet racking and cantilever racking with the objective of eliminating or minimising the hazards described in Clause 4. These hazards can arise during installation, starting up, operation, maintenance, testing and dismantling of the equipment. It is essential that the safety requirements and/or measures taken inThis standard be applied to storage equipment which operates indoors. Under difficult conditions, it is essential that additional hazard analysis and safety measures be taken into account, e. g. outdoor conditions, freezer applications, high temperatures, corrosive environment, strong magnetic fields, risk of explosive atmosphere, radioactive conditions, storage goods which due to their nature could generate hazardous situations (e. g. molten metal, acids/alkalis, fragile goods or explosives), effects of earthquakes and also contact with food. Examples of power-operated storage equipment to whichThis standard applies are shown in Annex A. With regard to buildings and parts of buildings,This standard applies only insofar that an assessment regarding hazards and risks in connection with interfaces to the storage equipment is carried out. Storage equipment whose only power source is directly used human labour or gravity are excluded from the scope of application of this standard. Power-operated storage equipment or parts of them do not fall under the regulations for passenger lifts. They are intended to handle and store goods. They are not intended to transport passengers under normal use (except for maintenance) and therefore not considered to be lifts (elevators).This standard does not take hazards into account, which arise from noisy environments or environments subject to electromagnetic interference outside the range quoted in EN 61000-6-2.
The present document defines the set of specification documents applicable to Service Purchase and Protection forIP Datacast services over DVB-H.