贝克兰和他的对手面临的共同挑战就是要找到某组条件——某种难以掌握的成份比率及热量和压力——能生产出更有效的类似紫胶的东西。
The challenge for Baekeland and his rivals was to find some set of conditions — some slippery ratio of in GREdients and heat and pressure that would yield a more workable, shellac-like substance.
贝克兰和他的对手面临的共同挑战就是要找到某组条件——某种难以掌握的成份比率及热量和压力——能生产出更有效的类似紫胶的东西。
The challenge for Baekeland and his rivals was to find some set of conditions----some slippery ratio of ingredients and heat and pressure that would yield a more workable, shellac-like substance.
目的：由微生物和钙镁沉积所共同形成的污垢是实际水系统中混合垢的主要成份。
Purpose: The mixed fouling consisting of microbes and calcium or magnesium salts is the major part of the fouling in practical water systems.
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