OVATION系统DCS卡件 Westinghouse 1C31129G03 Analog Output PLC Module

OVATION系统DCS卡件 Westinghouse 1C31129G03 Analog Output PLC Module

OVATION系统DCS卡件 Westinghouse 1C31129G03 Analog Output PLC Module

工程是将自然科学原理应用到工农业生产部门中去而形成各学科的总称。

　　“工程”是科学的某种应用，通过这一应用，使自然界的物质和能源的特性能够通过各种结构、机器、产品、系统和过程，是以zui短的时间和精而少的人力做出高效、可靠且对人类有用的东西。

　　随着人类文明的发展，人们可以建造出比单一产品更大、更复杂的产品，这些产品不再是结构或功能单一的东西，而是各种各样的所谓“人造系统”（比如建筑物、轮船、飞机等等），于是工程的概念就产生了，并且它逐渐发展为一门独立的学科和技艺。　　在现代社会中，“工程”一词有广义和狭义之分。就狭义而言，工程定义为“以某组设想的目标为依据，应用有关的科学知识和技术手段，通过一群人的有组织活动将某个（或某些）现有实体（自然的或人造的）转化为具有预期使用价值的人造产品过程”。就广义而言，工程则定义为由一群人为达到某种目的，在一个较长时间周期内进行协作活动的过程。

　　将自然科学的理论应用到具体工农业生产部门中形成的各学科的总称。如:水利工程、化学工程、土木建筑工程、遗传工程、系统工程、生物工程、海洋工程、环境微生物工程。

　　用较多的人力、物力来进行较大而复杂的工作，需要一个较长时间周期内来完成。如:城市改建工程、京九铁路工程、菜蓝子工程。

　　关于工程的研究——称为“工程学”关于工程的立项——称为“工程项目”一个全面的、大型的、复杂的包含各子项目的工程——称为“系统工程”。

APPLIED MATERIALS 0010-04926 HV MODULE CESC
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APPLIED MATERIALS 0010-05862 HOSE ASSY
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