However, vacuum column operations present an arduous environment for efficient fractionation, which makes upgrading product from bottoms to distillate more difficult.
然而，有效馏分的提取会使减压操作处境变得困难，也使塔底物料中蒸馏出更多的产品变得更加困难。
So far we've considered only basic model operations, like displaying or editing simple column values.
到现在为止，我们只考虑了基本的模型操作，例如显示或编辑简单的列值。
Note that if several counting functions or tests operate on the same column, then the sort and count operations only need to be done once.
注意，如果多个计数函数或测试在同一列上运行，那么排序与计数操作仅需做一次。
As shown, not printing column EDLEVEL in the report doesn't affect the compute and break operations defined on it.
如下所示，在报表中不打印列edlevel不会影响定义在该列上的计算和中断操作。
There are at least two column options that you can set to improve the federated server? S understanding of the remote data and encourage more operations to be pushed down.
至少可以通过设置两个列选项来提高联邦服务器对远程数据的理解，并鼓励下推更多的操作。
This function is used in select operations to retrieve the row security label column.
该函数在选择操作中检索行安全标签列。
The opposite operations can either be restricted or can be done using similar stored procedures (update in the relational column updates the XML document too).
也可以使用类似的存储过程限制或执行相反的操作(更新关系列导致同时更新XML文档)。
Relational databases use Structured Query Language (SQL) to pull information from multiple tables and columns, but key-value stores are limited to operations on the key column.
关系数据库使用结构化查询语言(Structured Query Language,SQL)以便从多个表和列中提取信息，但是键值存储仅限于对键列的操作。
Universal Services are a simple but fixed set of database operations that allow the querying and modification of XML data, stored in a pureXML column of a DB2 database.
UniversalServices是一组简单但固定的数据库操作，它们允许查询和修改储存在DB 2数据库的purexml列中的数据。
In explicit UPDATE STATISTICS operations in MEDIUM mode, a new SAMPLING SIZE option in the resolution clause specifies the minimum number of rows to sample for column distributions.
在使用MEDIUM模式的显式的UPDATESTATISTICS操作中，可以在resolution子句中使用新的SAMPLINGSIZE选项为列分布抽样指定最小行数。
In explicit UPDATE STATISTICS operations in MEDIUM mode, a new SAMPLING SIZE option in the Resolution clause can specify the minimum number of rows to sample for column distributions.
在MEDIUM模式的显式的UPDATESTATISTICS操作中，resolution子句中新的SAMPLINGSIZE选项可以指定列分布进行抽样的最少行数。
Figure 8 shows that the left outer join operations are cascaded if a rule USES more than one reference column.
图8展示了如果规则使用了多个参考列，那么左外部连接就进行级联。
One thing that can be confusing about R's "everything is a vector" approach is that row-wise and column-wise operations may not adhere to your intuition.
关于R的 “所有东西都是向量”方式，容易引起混乱的一点是行操作和列操作可能不符合直觉。
If you need to perform similar operations to a different table, replace the table name and the primary column name for the table with users and users_id, respectively.
如果你需要在一个不同的表上执行类似的操作，可以用users和users_id来分别替换该表的表名以及主列名。
These columns are associated with a line (denoted by the ID column) in the list of plan operations.
这些列关联操作计划列表中的行号（标记成ID列）。
Few years late, the copper industry in Chile adopted column flotation cells in some of its operations and since then their use became wide spread.
几年以后，智利的铜行业在一些操作中使用浮选柱，从此以后它开始广泛使用。
In the unit operations laboratory we experiment with two distillation columns: a24-plate and a12-plate distillation column.
在设备操作实验室中，我们用两套蒸馏设备进行试验：一个24盘的蒸馏塔和一个12盘的蒸馏塔。
OLTP compression-drop column is supported, but internally the database sets the column UNUSED to avoid long-running decompression and recompression operations.
对于oltp压缩也是不支持列删除，但是我们可以把列设置为unused的，避免解压缩和重新压缩操作队它的影响。
Resident: Neurological surgery involves operations on the brain and spinal column.
住院医生：神经外科手术主要是对大脑及脊柱进行的手术。
The study of different processes and operations in dynamic behavior of a column has been done in detail using a rigorous thermodynamic model.
应用严格的热力学模型研究了氢同位素低温精馏塔在不同进料扰动、回流比扰动以及馏出量扰动情况下的动态响应情况。
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