However, a broad spectrum of special designs are available: super-performance units for extra-stubborn bulk solids, eccentric discharges, food grade designs, dual discharge and low-profile.
设计应用广泛：超额外-散装顽固性固体，偏心排放，食品等级的设计，双放电。
Indeed, the very notion of productivity is a by-product of the clock: once one can relate performance to uniform time units, work is never the same.
事实上，生产力的概念本身就是时钟的副产品：一旦工作表现与统一的时间单位可以联系起来，工作就永远都不一样了。
If the best worker in the best environment turns in a performance worth 75 units at a cost of 10 units, then that worker's performance is 7.5.
如果最好的工人在最好的环境中用10单元的成本创造出了价值75单元的绩效，那么这个工人的绩效是7.5。
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