empty set
n.
空集；空系；
英英释义
Empty set
In mathematics, and more specifically set theory, the empty set is the unique set having no elements; its size or cardinality (count of elements in a set) is zero. Some axiomatic set theories assure that the empty set exists by including an axiom of empty set; in other theories, its existence can be deduced.
以上来源于:Wikipedia
权威例句
Union- Closed Sets Conjectureintersection, and the whole set S. Properties. (description)
Symplectic Filling
axiom of infinity
empty function (changes)
Story forming, then, yes, I begin to map it out
initial object
HeytAlg (changes)
Heyting algebra
Lat (changes)
1. They set the empty vehicle to circle the building to avoid paying for parking.
他们让空的汽车在大楼周围兜了一圈，以避免付停车费。
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2. They take their driver-less car to an appointment and set the empty vehicle to circle the building to avoid paying for parking.
他们把自己的无人驾驶汽车开到约定的地方，然后让空车绕行大楼，以避免支付停车费。
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3. They take their driverless car to an appointment and set the empty vehicle to circle the building to avoid paying for parking.
他们把无人驾驶汽车开到一个约会地点，然后让空车围着大楼周围转，以避免支付停车费。
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4. Next, create an empty entry and set its contents as the element representing the encrypted entry.
接下来，创建一个空条目并将表示已加密条目的元素设置为它的内容。
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5. This process is known as "index matching" and produces a (possibly empty) set of eligible indexes for the given query.
该过程被称为 “索引匹配”，并且为给定的查询生成一组合适的索引（可能是空集）。
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6. When you select this option, the export wizard will generate an empty correlation set and issue a warning.
当您选择该选项时，导出向导将会产生空缺的相关设置，并会发出警告。
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7. Drag the links data set to an empty data cell in the milestone items table.
将联系数据集合拖拉到重要工作项表格的空白数据单元中。
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8. You can remove the line entirely or leave an empty set of square brackets.
可以完全移除整个行，或者只留下方括号空集。
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9. In the case that an attribute's value remains empty, a default value is set.
假如属性的值仍然是空白的，那么会设置一个默认的值。
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10. Start from scratch: Start with an empty set of conditions and add your own.
从头开始：从一组空的条件开始并添加您自己的条件。
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11. When the bottle is empty, you can set the stop watch.
当瓶子空时，你可以设置一下秒表。
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12. Drag the child work items data set to an empty data cell in the links table.
将下级工作项数据拖拉到连接表格中的空白数据单元中。
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13. Proceeding into the otherwise empty courtyard, Fortune found fresh tea set to dry on large woven rattan plates, each the size of a kitchen table.
福琛接着走进一个空着的庭院，他看到新茶放在一个个餐桌大小的藤条编成的箩筐里晾晒。
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14. We set the values of their text nodes to the empty string and 0, respectively.
我们将其文本节点的值分别设为空字符串和0。
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15. This occurs because the fields are empty, so we are actually multiplying nothing by nothing (or empty set by empty set).
之所以会出现这个问题是由于字段是空的，因此实际上进行的计算是零乘零（或者空集乘空集）。
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16. Note that the effective set is empty.
注意，有效位是空的。
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17. If the number of tuples, calculated by using the Cartesian product, exceeds the set threshold; the NON EMPTY clause is applied to the query.
如果通过使用Cartesian产品计算的元组数超过设定的阈值，将NONempty子句应用于查询。
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18. This happens if you leave the event.title field null, or set it to an empty string.
如果让event . title字段为空，或者将它设置为空字符串就会出现这种情况。
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19. I set an empty instruction list for this MethodGen, which I'll later fill in with the actual timing code.
我为这个MethodGen设置一个空的指令清单，在后面我将用实际的计时代码填充它。
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20. Calling abort on a successfully completed request won't do anything and onreadystatechange is set to an empty function just in case the browser gets a delayed response for an old request.
在成功完成了的请求上调用abort不起任何作用，并且仅当浏览器收到一个对旧请求的延时响应的情况下，onreadystatechange才被设置为一个空函数。
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21. For task commands, an empty command result is set before invoking the execute method.
对于任务命令，在调用execute方法之前设置空的命令结果。
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22. The skip variable was set to "(empty string), so all input, including Spaces, goes to the token directive."
skip变量设置为' '(空字符串)，所以所有输入(包括空格)都转至标志伪指令。
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23. A DeploymentPolicyVersion is created for each successful Domain deployment, even if the DeploymentPolicy is empty and never set.
DeploymentPolicyVersion是为每个成功的Domain部署创建的，即使DeploymentPolicy是空的且从未设置的。
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24. This time, the non-root user has an empty capability set, while the process started as a root user has cap_dac_override in its permitted and effective sets.
这一次，非根用户的能力集是空的，作为根用户启动的进程的允许集和有效集中包含cap _ dac_override。
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25. NOTE: in listing 6, notice that we also set two display parameters (title and border) to empty values.
注意：在清单6中，我们还将两个显示参数(title和border)设置为空值。
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26. If this value is set to null or empty string, CLP throws a JCC exception: Column not updatable.
如果将这个值设置为null或空字符串，clp会抛出JCC异常：Column not updatable。
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27. When you invoke a Groovy method that has no parameters, you must call it with an empty set of parentheses, which allows Groovy to distinguish between a property access from a method call.
当您调用一个没有参数的Groovy方法时，您必须使用一对空括号调用它，这使得Groovy可以分清一个属性访问和一个方法调用之间的区别。
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28. This command defines the empty master replicates internally and also defines a replicate set (replset) on the specified tables.
在内部，该命令定义空的主复制，并且还在指定的表上定义一个复制集(replset)。
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29. If fetch returns FALSE, the result set is empty, thus a catalog table row for the catalog id value is not defined in the database table.
如果fetch返回FALSE，则结果集为空，表明数据库表中还没有为catalogid值定义一个catalog表行。
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30. If fetch returns FALSE, the result set is empty, thus a catalog table row for the catalog id value is not defined in the database table.
如果fetch返回FALSE，则结果集为空，表明数据库表中还没有为catalogid值定义一个catalog表行。
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empty set
