The experimental results show that the under ground heat loss is considerable in cold climate and it is necessary to build a underground heatconservation for greenhouses.
建议应该在温室的地层中增设保温层，并指出采用栽培床以减少灌溉水引起的热能损失的必要性。
2
For the reasons of nature conservation great attention is paid at the systems that use low-grade heat sources in their work (that is heat energy of soils, air, discharge and drain).
原因自然保护的关注在系统使用低品位热源的工作(热能的土壤、空气、放电和排水)。
3
This is in contradiction to caloric-theory notion of conservation of heat.