由于上述SOA原则对这些组件并没有严格的要求，所以我们可以将它们视为可选组件。
Since the SOA principles above do not strictly require these components, let's treat them as optional components.
可以忽略或要求可选的元素。
假设，一个给定的机构要求一个实例文档中必须出现特定的一些信息，而这却被HL 7CDAXML模式视为可选。
Suppose a given institution requires certain information be present in an instance document that is considered optional by the HL7 CDA XML schema.
应用程序不能在允许用户使用其功能和内容之前要求用户注册；此类用户注册必须是可选的，而且只用于基于账户的功能。
Applications cannot require user registration prior to allowing access to app features and content; such user registration must be optional and tied to account-based functionality.
任何被要求或者可选的服务数据输入和输出。
例如，Groovy不要求使用分号，变量类型和访问修饰符也是可选的。
For example, Groovy doesn't require semicolons, and it makes variable types and access modifiers optional.
中对该轴的支持是可选的，不过BC模式要求支持它。
Support for this axis becomes optional for 2.0, except that BC mode requires that it be supported.
为了实现此要求，组合应用程序实现需要能够禁用业务流程中的可选活动。
To realize this requirement composite applications implementations need the ability to disable optional activities in a business process.
在每个街道的角落都有提款机和银行的分行，那么就无需要求可选的付费系统。
With cash machines and bank branches at every street corner there is less call for an alternative payment system.
和上面发现的类似，我们注意到大多数网站避免可选项并且要求用户在完成注册流程之后补全可选项。
Similarly to above findings one can observe that most sites avoid optional fields and ask users to provide the optional information after the registration process is already done.
该表单要求您填写您的姓名（可选）、昵称、电子邮件地址，以及创建博客的原因。
The form asks for your name (optional), your display name, your e-mail address, and the reason you'd like to start a blog.
作为可选项，也有可能支持用户自定义类型，这将极大的简化所要求的表达式。
It may optionally support user defined types, which can greatly simplify the required expressions.
服务设计——这里的政策一定要求定义服务范围，边界以及标识服务描述和服务契约的必备元素和可选元素。
Service design - where policies must require to define service scope and boundaries as well as identify the set of mandatory and optional elements of.
它是eXo platoform的一部分，包含规范要求的所有强制特性和几个可选特性。
Is part of the eXo platoform and contains all the mandatory features required by the specification and several optional ones.
在其他各种可选的应用程序的相关要求与有时计数器的趋势特点以及履行。
In additional various optional application related requirements with sometimes counter trended features have to be fulfilled as well.
上这门课要拿学分的同学可选择两种方法之一满足书面作业的要求：典型的课程论文，或者两篇评论文章。
Those taking the course for credit can satisfy the requirement for written work in one of two ways: a typical class paper, or, a pair of review essays.
可选：烤三文鱼。这道菜不仅满足了你对所有鱼味的要求，还不用你剥壳，也不会有酱汁溅你身上。
Alternative: Grilled salmon. This entrée has all the fish flavors you want, and none of the shell-cracking, sauce-splattering you don't want.
按照特定的规程执行，并备有可选择的规程可供选择，以满足特殊的情况和要求。
Perform specified procedure along with alternate procedures to offer a choice, meeting specific situations, or requests.
变更请求可以直接或间接、内部或外部提出，可以是可选择的，也可以是法律或合同强制要求的。
Requests for a change can be direct or indirect, externally or internally initiated, and can be optional or legally/contractually mandated.
底座有可选旋转顶端，可让您调整工业显示器以适合您的浏览要求。
Pedestal is available with optional swivel top that allows you to adjust your industrial monitor to best fit your viewing requirements.
对于那些寻找室外变压器的客来说户，该新的装置配备可选的符合UL - 3r要求的防护罩。
For those customers seeking an outdoor transformer, the new units can be outfitted with optional weather shields which meet UL-3R requirements.
这个测验还可选择答案删去法，或者要求同学的协助，教室内也设有电话“打给朋友”。
The quiz also allows children to ask for two incorrect answers to be taken away or to ask the class for help - the school room equivalent of 'phoning a friend'.
具有接口类型可选择，通讯速率可满足高速要求的功能。
And this has the advantage of port type selectable, high communication speed which meets the demand.
我们也可以自由选择一些课程，来达到通识教育的要求，但可选的范围窄得多。
We had some choices among courses that met those requirements, but they were rather narrow.
UPS付款方式的灵活性在于您可选择的您喜欢的支付方法或给给您指出您的客户希望要求的支付方法。
UPS billing options give you the flexibility to choose your preferred payment method or indicate the method of payment your customers require.
有一种可选用的试验方法看来很有希望，它不要求直接测量接触角。
An alternate experimental approach which does not require the direct measurement of contact Angle appears to be promising.
针对不同的金属材料和切割断面的要求，用户可选用气体火焰切割和等离子切割两种方式。
For different metal materials and cutting cross-section, the user can choose gas flame cutting and plasma cutting in two ways.
其优点是可选择少量的参数，公式简单，但需要求解较大阶数的方程组和确定模型的最优结构。
Nevertheless, it requires solving system of equations with larger degree and determining the optimum structure of this model.
装饰要求较高的部位可选用超薄型防火涂料。4防火涂料的厚度，宜直接采用实际构件的耐火试验数据。
Decorative requirements of the higher parts can choose ultra-thin fire retardant coating. 4 fire coating thickness should directly adopt the fire test data of actual components.
装饰要求较高的部位可选用超薄型防火涂料。4防火涂料的厚度，宜直接采用实际构件的耐火试验数据。
Decorative requirements of the higher parts can choose ultra-thin fire retardant coating. 4 fire coating thickness should directly adopt the fire test data of actual components.
应用推荐