求翻译：0前言：尿素装置的特点是高温、高压、易燃、易爆、易结晶、易腐蚀、易中毒，在尿素生产过程中，由于有工艺介质尾气放空、废液的排放和系统的跑冒滴漏现象，而不可避免地对周围环境产生一定的负面影响。是什么意思？

0 Introduction: urea plant is characterized by high temperature, high pressure, flammable, explosive, crystalline, corrosive, easy to poisoning, the urea production process, due to process fluid exhaust venting, emissions and waste water systems leaking phenomenon, and the surrounding environment wi

0 Foreword: urea devices are characterized by high temperature and high pressure, inflammable, explosive, easily crystallize, perishable, easily poisoning, urea, which, due to the technological media production process exhaust gas emissions into the air, liquids and system of the phenomenon, and was

0 forewords: The urea installment characteristic is the high temperature, the high pressure, flammable, explosive, easy to crystallize easily, to corrode easily, to be poisoned, in urea production process, because has the craft medium exhaust to blow off, the waste liquid emissions and the system ru

Preface to the 0: urea plants are characterized by high temperature, high pressure, flammable, explosive, easy to mould, easy to corrosion and poisoning, in process of urea production, emissions of waste due to process media-gas venting, and improve water-supply system, which inevitably have some ne

0 forewords: The characteristic of the urea apparatus is the high temperature, high pressure, flammable, explosive and exchanging crystallization, corrosive, apt to be poisoned, while the urea produces, have craft medium exhaust to release empty, discharge of waste liquid with the systematic running