A source of calcium and hydroxide should be provided to avoid such conflictingoperation conditions.
应提供钙和氢氧化物的来源，以避免这样的矛盾工作条件。
2
This restriction is different from the conflicting receive restriction, since a request-response operation is said to be active until the corresponding reply activity has been executed.
此限制与接收冲突限制不同，因为请求-响应操作在对应的应答活动执行完成之前都处于活动状态。
3
Unable to continue operation because multiple conflicting controls were used.