The task also has a start node, however, this node is optional and does not change the execution semantics of the task, which can only begin execution when the input is available.
该任务也有一个开始节点，不过，这个节点是可选的，不会改变任务的执行语义，这个任务只有在该输入可用的情况下才会开始执行。
Change to the cardinality of fields in the output message, such as changing mandatory fields to optional fields, will break existing consumers.
对输出消息中的字段的基数性进行更改(如将强制字段更改为了可选字段)将中断现有使用者。
The first basic change presented in Listing 4 is the extension of the ACORD schema by adding an optional element for a party's social security number (SSN).
清单4中的第一种基本变化是ACORD模式的扩展，增加了一个可选元素表示参与者的社会安全号码(SSN)。
At first, the logic behind this sounds reasonable: If you change this data element from optional to required, you essentially duplicate error processing that occurs elsewhere in the system.
首先，整个过程背后的逻辑是合理的：如果您将这项数据元素从可选改为必需，那么您基本上就是复制了系统中其他地方所使用的错误处理过程。
CONT_PATH: This is an optional parameter that is used to change the location of one or more table space containers.
CONT _ PATH：可选参数，用来更改一个或多个表空间容器的位置。
Change to true in order to install an optional feature.
为了安装可选择的特性，将变更为true。
Optional: to validate successful execution of the generated commands, look in the Messages Section of the change management script editor.
可选操作：为了验证所生成命令是否成功执行，您可以查看变更管理脚本编辑器的MessagesSection。
Requests for a change can be direct or indirect, externally or internally initiated, and can be optional or legally/contractually mandated.
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。
For use at bank ATM/counter and at China UnionPay merchants(optional)Please change it at any ATM of Bank of Communications.
用于在银行自动柜员机的交易，柜台取现及商户签账消费（可选）请在交通银行自动柜员机上进行修改。
Shaft Change: Three kinds of cutting shafts for optional using on this machine, which use quick changing shaft according to different material.
快速换轴装置：本机器有三种切割轴可共选用，采用快速换轴方式，因应不同材料需求。
The equipped RS485 interface (optional) enables the incubator to record the change of temperature and humidity.
接口，能记录温、湿度参数的变化（选配）。
Signing is an optional step, which makes it easier to change the application files after the manifests are generated.
签章是选择性步骤容易变更之后，就会产生资讯清单的应用程序档案。
Signing is an optional step, which makes it easier to change the application files after the manifests are generated.
签章是选择性步骤容易变更之后，就会产生资讯清单的应用程序档案。
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