The attachment can be a PDF or a DOC file, an XLS spreadsheet, a binary image, or a voice or video multi-media file.

附件可以是一个PDF或DOC文件、一个XLS电子表格、一幅二进制图像，或一个视频或音频多媒体文件。

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The SUBDATASETS domain holds a list of child datasets. Normally this is used to provide pointers to a list of images stored within a single multi image file (such as HDF or NITF).

SUBDATASET的域包含一些列子资料组，一般，这些用于提供指针指向存储在单个多文件的图像的列表（比如，HDF文件或者NITF文件）。

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The communication of multimedia is a multi-task-oriented system which transfers voice, image, and date file by p2p or peer to multi-peer.

多媒体通信业务是一种点对点或点对多点传送声音、图像、数据文件的同步交互式多业务。

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