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Two grades of lactose, monohydrate and spray-dried, are selected.
Two grades of concrete compressive strength are considered.
Two grades of carbon steels with compositions differing mainly in carbon content were used as substrates.
Two grades of commercially available ultrafine molybdenum powders are investigated for their compaction and densification behavior.
Two grades of polypropylene and two grades of polystyrene were studied using the slit die and the results were compared to those obtained using a capillary rheometer and a rotational rheometer in steady and dynamic modes.
Two grades of DEX with average molecular weight of 10000 and 6000 were employed.
I think he skipped two grades".
"That's like comparing two grades of cheese," he said moodily.
He's also smart enough that he skipped two grades.
Moody's said it lowered Maytag's rating two grades, to Ba2 from Baa3.
Only two grades were started this year -- 9th and the age equivalent of the 11th.
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