In addition to abstracting the details of file operations from the underlying file systems, VFS ties the underlying block devices to the available file systems.
除了从底层文件系统抽象文件操作的细节之外，VFS还将底层块设备绑定到可用的文件系统。
Investigation shows that the scheme is provable security under the blockwise adaptive attack model if the underlying block cipher is a pseudorandom permutation.
结果表明，在所用分组密码是伪随机置换的条件下，方案在分块适应性攻击模型下是可证明安全的。
I used a composite material consisting of the underlying block-work and a rendered cement finish controlled with a mask and finally a dirt map for added wear along the objects edges.
我使用了复合的材料纹理——底层为砌块纹理，上层为渲染后混凝土效果图，通过mask进行控制，最后使用一个污垢贴图覆盖在物体的边缘。
Unlike most other filesystems like Ext2fs and JFFS2, which reside on top of the underlying block device, TMPFS sits directly on top of the VM. Thus mounting the TMPFS filesystem is a simple affair.
诸如Ext2fs和JFFS2等大多数其它文件系统都驻留在底层块设备之上，而tmpfs与它们不同，它直接位于VM上。
Next is the block device drivers layer, which contains the various block drivers for underlying devices.
接下来是块设备驱动器层，它包括针对底层设备的各种块驱动器。
When those storage mediums are SCSI related, the SCSI subsystem translates the common Linux block requests into SCSI requests for the particular underlying device.
若这些存储介质与SCSI相关，scsi子系统会将公共Linux块请求转化为针对特定底层设备的SCSI请求。
Because the Ceph clients implement CRUSH and do not have knowledge of the block mapping of files on the disks, the underlying storage devices can safely manage the mapping of objects to blocks.
因为Ceph客户实现CRUSH，而且对磁盘上的文件映射块一无所知，下面的存储设备就能安全地管理对象到块的映射。
Unlike a filesystem for a single disk, a file in HDFS that is smaller than a single block does not occupy a full block's worth of underlying storage.
跟单个磁盘文件系统不同的是，HDFS中比磁盘块小的文件不会沾满整个块的潜在存储空间。
Gets a value indicating whether the final buffer block has been written to the underlying stream.
获取一个值，该值指示最终缓冲区块是否已写入基础流。
The principles underlying the control and hardware topology as well as a block diagram for the main procedure are alsop…
文中还叙述了系统的控制原理及硬件组成，且给出了主要的程序框图。
The principles underlying the control and hardware topology as well as a block diagram for the main procedure are alsop…
文中还叙述了系统的控制原理及硬件组成，且给出了主要的程序框图。
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