drop-in substitute

基本解釋

Appropriately designed drop-in fuels can substitute for diesel and aviation fuel, which ethanol cannot.
適合的設計的dropin燃料能夠夠替代柴油和航空用油，乙醇是做不到這點的。
Prospects the application of hydrocarbon refrigerants to automobile air-conditioners and considers that they may be a drop-in substitute for R12.
同時，展望了碳氫制冷劑在汽車空調中的應用前景，認為其有可能成為R12的直接充注替代物。
By a combination of theoretical analysis and performance testing, it is shown that refrigerant mixture R407C is a drop-in substitute for R22 in inverter heat pump air-conditioners.
通過理論分析及空調器整機性能試驗，說明混合工質R407C是變頻冷暖空調器中R22 的灌注式替代工質。