这些研究主要涉及传热、压降和振动。的翻译：These mainly involve heat transfer and pressure loss and vibration. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

These studies mainly related to heat transfer, pressure drop and vibration.

These mainly involve heat transfer and pressure loss and vibration.

These research mainly involves the heat transfer, the pressure drop and the vibration.

These studies are primarily involving heat transfer, pressure drop and vibration.

These mainly involve heat transfer and pressure loss and vibration.