The court has laid down a standard that the commonality of a class cannot be presumed just because all presumptive members feel the same grievance.
法院因此划定了一个标准，即不能仅根据其成员是否受到了同样的不满来划定诉讼群体。
NIBCO Ductile iron valves come standard ANSI B16.42 Class 150 flanges and the same end-to-end dimensions as Class 125 iron or Class 150 steel valves.
美国尼必可球墨铸铁阀门符合ANSI B 16.42标准150磅级法兰和相同端对端尺寸的125磅级铸铁或150磅级钢阀门。
According to America and europe standard difference. There are two kinds, the test ways of A and B is different, but protective class is the same.
粉尘防爆电气设备根据美标和欧标的差异，为分A、B两种型式。A、B两种采用的试验方法不同，但保护的等级是等同的。
The formaldehyde emission of the plywood made of veneers soaked by BL-formaldehyde absorptive can accord with the E_0 class standard, and the bonding strength can be assured at the same time.
同时针对不同的脲醛树脂，要采取不同的工艺措施；(3)将单板用BL—甲醛消纳剂浸渍后再按正常工艺生产的胶合板可达到环保E_0级标准，且胶合强度有保证。
The formaldehyde emission of the plywood made of veneers soaked by BL-formaldehyde absorptive can accord with the E_0 class standard, and the bonding strength can be assured at the same time.
同时针对不同的脲醛树脂，要采取不同的工艺措施；(3)将单板用BL—甲醛消纳剂浸渍后再按正常工艺生产的胶合板可达到环保E_0级标准，且胶合强度有保证。
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