这些机制都为管理超量使用的内存提供了有效的框架，但它们都有一个共同的限制：必须由外部实体来配置和调优。
These mechanisms provide an effective framework for managing overcommitted memory, but they all share an important limitation: they must be configured and tuned by an external entity.
显然，现在还有一些限制，当某人想暴露同一个资源的多个版本的时候，却无法复制它的实体数据。
Obviously this has some limitations when one want to expose multiple versions of the same resource without duplicating the entity data.
另一种限制源自于这样一个事实：域对象可以通过由实体管理器所管理的域对象所在的层访问，也可以通过分离它的所有其他层访问。
Another restriction arises from the fact that the domain objects can be accessed both in the tier where they are managed by the entity manager and in all the other tiers where they are detached.
XML对元素名称、实体深度和类似的东西没有内建限制，所以攻击者可以为这些构造体提供很长的值。
XML has no built-in limits on names of elements, entity depths, and the like, so an attacker could provide long values for these constructs.
XML用户也能使用声明可重用外部实体的SGML方法，但是 XML中这种方法有一些实际的限制。
The SGML method of declaring reusable external entities is available for XML users, but this has several practical limitations in XML.
该实体的缺点(对于一些人来说)就是对股东的限制：不能超过100个人，股东必须是美国公民或居民，只能发行一种股票。
The drawbacks (for some people) are the limits on shareholders: no more than 100 of them, they must be individual us citizens or residents, and only one class of stock is allowed.
尽管如此，对于大小的限制和对物质介质的需求意味着大部分DS软件会借助实体卡片传播。
However, size limits and the desire for physical media means the majority of ds software sales will remain retail, distributed through physical CARDS.
一个逻辑数据模型不受不同实体之间关系的限制。
A logical data model is not constrained regarding possible relationships between different entities.
对XML文档编码可以缩小文档的大小，但是并没有限制文档使用特定的unicode子集，这要感谢字符实体。
Encoding XML documents can reduce their size, but it does not limit the document to a subset of Unicode — thanks to the magic of character entities.
第二个函数XMLEXISTS将结果限制为引用特定实体(agriumInc .)的FpML 4.7文档。
The second function, XMLEXISTS , restricts the results to FpML 4.7 documents that reference a specific entity (Agrium Inc.).
对外部实体的支持可能会导致安全问题，还可能会有性能影响，但是在这两方面都有解决方案，我希望Firefox不久就能解决这些限制。
Support of such external entities does have possible security implications, and possible performance implications, but both have workarounds, and I hope Firefox addresses these limitations soon.
Conflictset：是一个域对象属性，能够根据某个实体可能已定义的现有域访问权限来限制对域的访问。
Conflict set - a conflict set is a domain object attribute that restricts access to a domain based upon the existing domain (s) access that an entity may already have defined.
外部实体很方便，但也有一些限制。
External entities are handy but have some limitations. The most significant, in terms of reusing information, are.
假设，为了反映Acme成员管理权的限制性因素，您可以对JPA实体做一些调整。
Assume that, to reflect the constraints of the business rules for Acme's membership administration, you would like to make a few adjustments to your JPA entities.
Bean验证可用于提供可选的实体验证，基于注释和XML限制、验证组和JSR- 303规范定义组序列。
Bean validation can be used to provide optional entity validation, based on the annotation and XML constraints, validation groups, and group sequences defined by the JSR-303 specification.
有多少设计是限于创造工具而被迫选择了正切的造型形式(比如有切线限制的实体建模软件)？
How many are tangentially sculpted because of the tools of creation (tangent-restricted solid modeling software)?
但是，这个选择会受到部署工具局限性的限制—部署工具将bean实例的状态映射到数据库，这种情况下可能会使用bean管理的持久性(BMP)实体bean。
However, this choice can be limited by the deployment tool's limitation to map the bean instance's state to the database, in which case a bean-managed persistence (BMP) entity bean may be used.
不像实体店，网络购物对你来说没有任何时间限制。
Unlike the physical stores, there is no limit of time for you to do the shopping online.
没有物理实体的限制，这些强大而神秘的生物的分布极其宽广，可以说是无所不至。
Unbound by the constraints of physical reality, these powerful, mystical creatures often range far and wide: almost norealm is out of reach.
比如说，在“一对多”关系的多的一端，实体实例最少和最多是多少，有没有限制；
What are the minimum and maximum number of records that can exist on the many side of a one-to-many relationship?
而有关搜查的适用条件，则可以从实体和程序等方面予以限制。
Conditions for search can be limited from substantive and procedural aspects.
禁止联合限制竞争制度是各国反垄断法基本实体制度的三根支柱之一。
The prohibition union limit competition system is one of three props of various countries' counter-monopoly law basic entity system.
完善的海事赔偿责任限制制度包括实体法和程序法两方面的内容。
A well-developed legal system of limitation of liability for maritime claims includes provisions both in substantive law and in procedure law.
借由限制产生自展开实体的字元数，可让您侦测攻击并顺利地复原。
By limiting the characters that result from expanded entities, you can detect the attack and recover reliably.
当攻击者送出尝试利用展开实体来超出记忆体限制的XML文件时，这个属性可让您减轻这类拒绝服务攻击的影响。
This property allows you to mitigate denial of service attacks where the attacker submits XML documents that attempt to exceed memory limits via expanding entities.
演示如何将关联的两端限制为有效实体。
Shows how to restrict the ends of associations to valid entities.
“隐藏的网站”功能允许管理员限制用户的访问只是一个子集的实体制度。
The "hidden site" feature allows managers to limit a user's access to only a subset of entities in the system.
我知道如何用几种不同的方法来优化控制器增益，但使用实体设备装置时往往会面临实际限制。
I know how to use several different methods to optimize the controller gain, but often face practical limitations on the use of physical facilities and equipment.
我知道如何用几种不同的方法来优化控制器增益，但使用实体设备装置时往往会面临实际限制。
I know how to use several different methods to optimize the controller gain, but often face practical limitations on the use of physical facilities and equipment.
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