香皂的防腐体系有效且稳定，防腐剂的使用量也在允许范围之内。
The preservative systems of soaps are effective and stable, and the preservatives are safely used in soap.
研究结果表明， HEDP是一种较为有效且稳定的化学阻垢药剂；
The results showed that HEDP was an effective and stable chemical scale inhibitor;
当您使用各种测试模块来构筑工作负荷场景时，您要确保它们组织在一个有效，且程序稳定使用的流程之中。
When building your workload scenarios using various test modules, ensure that they are organized in a flow that is valid and consistent with the application use.
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