查询词典 partition

Command: d Partition number (1-11): 6 Command: n Command action l logical (5 or over) p primary partition (1-4) l First cylinder (5001-20886, default 5001): Using default value 5001 Last cylinder or +size or +sizeM or +sizeK (5001-7500, default 7500): Using default value 7500 Command: p Disk /dev/sda: 171.7 GB, 171798691840 bytes 255 heads, 63 sectors/track, 20886 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 1250 10040593+ 7 HPFS/NTFS /dev/sda2 1251 20886 157726170 5 Extended /dev/sda5 1251 2500 10040593+ 7 HPFS/NTFS /dev/sda6 7501 10000 20081218+ b W95 FAT32 /dev/sda7 10001 20886 87441763+ 7 HPFS/NTFS /dev/sda8 2501 3000 4016218+ 83 Linux /dev/sda9 3001 3125 1004031 82 Linux swap / Solaris /dev/sda10 3126 5000 15060906 83 Linux /dev/sda11 5001 7500 20081218+ 83 Linux Partition table entries are not in disk order Command: t Partition number (1-11): 11 Hex code: 7 Changed system type of partition 11 to 7 Command: p Disk /dev/sda: 171.7 GB, 171798691840 bytes 255 heads, 63 sectors/track, 20886 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 1250 10040593+ 7 HPFS/NTFS /dev/sda2 1251 20886 157726170 5 Extended /dev/sda5 1251 2500 10040593+ 7 HPFS/NTFS /dev/sda6 7501 10000 20081218+ c W95 FAT32 /dev/sda7 10001 20886 87441763+ 7 HPFS/NTFS /dev/sda8 2501 3000 4016218+ 83 Linux /dev/sda9 3001 3125 1004031 82 Linux swap / Solaris /dev/sda10 3126 5000 15060906 83 Linux /dev/sda11 5001 7500 20081218+ 7 HPFS/NTFS Partition table entries are not in disk order Command m for help

到这里，就已经将原先的windows的E盘（2501到5000柱面），那个/dev/sda6分成了三个区。现在如果保存分区操作后，再使用格式化工具创建文件系统后，原先的 2501到5000柱面上的数据将丢失。当然，我们不必担心，因为事先已经将文件复制到了其它的地方了。注意：现在有一个问题，看上面/dev/sda11 的尾柱面是 5000 ，而/dev/sda6的首柱面是5001 。一直到/dev/sda8 的首柱面都位于/dev/sda11的尾柱面之后。也就是说它们的物理位置在后面，但分区编号在前面。为改变这一状况，有一个简易的方法。就是先删紧靠 5000柱面之后的一个分区，然后立即按默认首柱面和尾柱面进行分配，在重建分区表的时候注意把分区的系统标识也改也原先的（因为 Linux的fdisk中默认的新建的分区系统标识为id为83。

hand to restore the partition table is a relatively reliable method to restore the use of this method must first master the strategy division of the hard disk partition, partition the data records of the location, area of the recording format of data, area data of the inter-relationship between as well as the partition table of the relevant knowledge group; winhex followed by the use of software to be able to deal with access to hard data on the sector, and in accordance with the results derived to deal with the loss of the partition information, and to achieve the restoration of the partition table.

手工恢复分区表是一种比较可靠的恢复方法，使用这一方法必须首先掌握硬盘分区的划分策略、分区数据的记录位置、分区数据的记录格式、分区数据之间的相互关系以及分区表组的相关知识；其次要能够使用winhex软件，去处理访问硬盘有关扇区的数据，并根据处理结果来推导出丢失的分区信息，进而实现分区表的恢复。

We see the signature value of 0x504d in bytes 0 to 1 and the number of partitions in bytes 4 to 7, which is 10 (0x0000000a). Bytes 8 to 11 show us that the first sector of the disk is the starting sector for this partition and that its size is 63 sectors (0x3f). The name of the partition is "Apple," and the type of partition is "Apple_partition_map." Bytes 88 to 91 show that no flags for this partition are set.

我们可以看到0-1字节处签名值为0x504d，4-7字节处的分区总数为10，8-11字节处表示硬盘的第一扇区是该分区的起始扇区，它的大小为63扇区（0x3f），分区名称为"Apple"，分区类型为"Apple partition map"，88-91字节处显示该分区无设置标志。

The problem of set partitions in combinatorial mathematics is conside-red, and the following three points are emphasized:(1) the non-recursivealgorithm for computing the number of partitions of an N-Set, P;(2)the algorithm for mapping the partition vector V to the partition sequencenumber D;(3) the algorithm for mapping the partition sequence number Dto the partition vector V.

本文对组合数学中的集合划分问题进行了一些探索，试图回答下面三个问题：①集合划分方法数P的非递归算法，②划分向量V映射到划分序号D的算法，③划分序号D映射到划分向量V的算法。本文以划分的构造树为基础，加以变换，得到数目树和分块树，由此求得P，以及K块划分方法数P_K。

For multiple-partition database partition groups, the partition numbers of the database partition group are specified in a round-robin fashion.

对于多分区数据库分区组，数据库分区组中的分区号是以循环的方式指定的。

It is plain enough that a computer hard drive itself, the hard disk at startup, first of all, hard to read the contents of master boot area, the hard drive partition information is read into the cache, then the basis of information sent by the host to read goal of the operation of the Boot partition information, the target partition to decrypt the content guide information, and then the next table to read FAT and root directory, so that the target partition can read any file.

说得再明白一点，硬盘自身也是一部计算机，硬盘在启动时，首先要读取硬盘主引导区的内容，把硬盘的分区信息读入缓存，再根据主机送来的信息去读取目标操作分区的引导区信息，把目标分区的引导信息内容进行解密，再接下来去读取FAT表和根目录，这样就可以读取目标分区中的任一文件。

Ghost in the use of Disk to hard drive or partition, by a small capacity hard disk or partition to the same or larger capacity hard disk, partition cloning is no big deal, and the target hard disk or partition with the source disk, as disk capacity is greater than the source of the free space has become.

在使用Ghost进行硬盘或分区对拷时，由容量小的硬盘或分区向容量等同或大的硬盘、分区进行克隆是完全没有问题的，并且目标硬盘或分区会与源盘一样，大于源盘容量的部分，就成为自由空间。

Density Functional Theory method was used to optimize the geometries of 209 PCDE molecules, 209 PBDE molecules and 75 PCDD molecules at the B3LYP/6-31G* level. Using computed structural parameters as theoretical descriptors, the forward stepwise multiple regression technique was adopted to obtain QSPR models of environmental partition properties for these POPs by using GQSARF 2.0 and SPSS12.0 for windows programs. The obtained QSPR models are as follows:(1) QSPR models for predicting subcooled liquid vapor pressure, n-octanol/water partition coefficients lgK_(ow and subcooled liquid water solubilities -lgS_(w,l of PCDEs, of which correlative coefficients (R~2) are 0.988, 0.958 and 0.959 and the root-mean-square-error of estimation are 0.134, 0.116 and 0.327 respectively.(2) QSPR models of lgPL and n-octanol/air partition coefficients lgK_(oa for PBDEs, which both contain three structural parameters. The values of R2 for the two models are both 0.997 while the values of RMSEE are 0.073 and 0.062 respectively.(3) QSPR models of lgKow and–lgS_ for PCDEs, which both have one variable (mean molecular polarizability,α). The values of R~2 for the two models are 0.978 and 0.866 and the values of RMSEE are 0.300 and 0.270 respectively.(4) The molecular structures of 24 substituted naphthaline compounds were optimized using Hartree-Fock and DFT methods at four different levels and the same means was used to obtain four three-parameter (EHOMO, q~+ andα) QSPR models of lgK_. The model at the HF/6-311G** level is the best one of which R2 is 0.9662 and RMSEE is 0.380.(5) QSPR study for environmental partition properties of PCDEs was also performed using position of Cl substitution method in which simple parameters of substitution position were taken as descriptors. The multiple linear regression was performed with GQSARF 2.0 and SSPS 12.0 for windows programs to obtain QSPR models of lgP_L, lgK_ and–lgS_ for PCDEs of which R~2 are 0.991, 0.983 and 0.965 and RMSEE are 0.311, 0.100 and 0.300 respectively.

采用密度泛函理论方法在B3LYP/6-31G*水平上对PCDEs、PBDEs和PCDDs的分子结构进行了全优化计算，以计算得到的量子化学参数作为理论描述符，采用GQSARF 2.0和SPSS 12.0 for windows统计程序进行正向逐步回归分析，建立了这些POPs的环境分配性质的QSPR模型：(1) PCDEs的过冷液体蒸汽压、正辛醇/水分配系数lgK_(ow和水溶解度-lgS_(w，l的QSPR模型，这3个QSPR模型的相关系数(R2)分别为0.988、0.958和0.959，估计的均方根误差分别为0.134、0.116和0.327；(2) PBDEs的lgPL和正辛醇/空气分配系数lgK_(oa的QSPR模型，这两个模型都包含三个分子结构参数，其R~2都为0.997，RSMEE分别为0.073和0.062；(3) PCDDs类化合物的lgK_和-lgS_w的QSPR模型，两个模型都只含一个变量，其R~2分别为0.978和0.866，RSMEE分别为0.300和0.270；(4)采用Hartree-Fock和DFT方法，在4种不同水平上优化计算了24个取代萘系列化合物的分子结构，采用上述同样的方法分别建立了四种水平上的三变量lgK_模型，通过比较得到，在HF/6-311G**水平计算得到的模型最好，R为0.966，RSMEE为0.380；(5)同时，采用氯原子取代位置方法对PCDEs的环境分配性质进行QSPR研究，建立了PCDEs的lgPL、lgK_和-lgS_的QSPR模型，其R~2分别为0.991、0.983和0.965，RSMEE分别为0.110、0.100和0.300。

This dissertation presents a new theory and method of assembly unit partition based on the knowledge. Research of the key techniques of assembly unit partition includes the assembly knowledge acquisition and representation, the main assembly unit partition and the unassembled partition.

系统地提出了基于知识的航空产品装配单元划分的理论与方法，对装配工艺知识的获取、知识的表示、主体装配单元划分、未组合件划分等关键技术进行了深入的研究。

Chapter 3 presents the object-oriented knowledge model, gives the knowledge representation method which combing the object-oriented with generation rule; ascertains the relation between entities in knowledge base of assembly unit partition; expatiates the reasoning policy and conflict solution policy.Chapter 4 presents make two steps to finish the assembly unit partition, which are the main assembly unit partition and unassembled partition, interlude using knowledge.

第三章提出了面向对象的知识模型，结合飞机产品特点，提出了面向对象与产生式规则相结合的知识表示方法；以装配工艺快速设计支持系统的知识库结构为基础，明确了装配单元划分系统知识库中实体间联系；阐述了知识的正向推理策略及冲突消解策略。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？