翻译求助，翻译完加加分啊？ 1.heat, as a form of energy, cannot be created or destroyed. heat can be transferred from one substance to another. 2:yields: ethylene yields to 84% for ethane, 38% for naphtha and 30% for gas oil may be achieved depending upon feedstock characteristics. （ yield--- 收率 ethane －乙烷 gas oil －柴油 naphtha －石脑油） 3 ： vent the exchanger to the atmosphere with the globe valve open on the line. （ vent--- 放空； globe valve －球阀） 4 ： all commissioning operations have been completed, including pressure leaks check, blinds removal, drying and nitrogen purge of equipment and piping interested by process fluids (venting nitrogen pressure to blow down through psv's by pass and through the drain on the lowest points, pipes and equipment). 5 ： the butene storage system contains large amounts of flammable butene. care should be taken to prevent butene leaks. instrumentation is provided to assist in the safe operation of this equipment. alarms are provided to indicate high or low levels and high pressures. a spill is extremely dangerous due to the explosive nature of butene gas. since the gas is heavier than the air it will remain near the ground and concentrate in low areas. 只要翻译一个也加分啊 查看更多
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