| 术语 | 描述 |
|---|---|
| 应 shall | used to express a requirement, i.e., a provision that the user is obliged to satisfy to comply with the Standard |
| 宜 should | used to express a recommendation, but not a requirement |
| 可 may | used to express an option or something permissible within the scope of the Standard |
| 能 can | used to express a possibility or a capability |
| 排水、废水和通风 DWV | drain, waste, and vent |
| 流量计 1-inch digital | Used to measure the flow rate during testing. |
| 流量计 1-inch digital | Used to measure the flow rate during testing. |
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