For a specific designtype, at least one production venting device of every size shall be flow tested.
对于特殊的设计类型，至少一个产品的的每一个型号的防空设备都需要流量测试。
2
According to designtype in intervention researches, selecting different indicators of the efficacy such as the mean, percentage, relative risk, odds ratio etc.
干预性研究需要根据研究设计类型，选取均数、百分率、相对危险度、比值比等不同的疗效指标表示方式。
3
It is the first car of its type to have this design feature.