There is an increasing belief in the idea that the " problem solving attitude of the engineer must be buttressed(维持,支持,支撑) not only by technical knowledge and"scientific analysis but that the engineer must also be aware of economics and psychology and perhaps even more important, that he must understand the world around himThere is an increasing belief in the idea that the “problem solving attitude” of the engineer must be buttressed(维持，支持，支撑) not only by technical knowledge and “scientific analysis” but that the engineer must also be aware of economics and psychology and, perhaps even more important, that he must understand the world around him