All external walls are lightweight and insulated against heattransference in summer.
外墙都是轻量且在夏季绝热。
2
Hold No. 1 was on fire and timber stowed in it was burning fiercely. Obviously, fire spread was due to heattransference through bulkhead.
第一舱起火，舱内木材猛烈燃烧，火的蔓延显然是由于舱壁传热所致。
3
At present, the ventilation pipes are generally made by concrete or PVC without holes on the pipe walls, whose cooling effects are realized by airflow and heattransference.