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- steam trace heating 蒸汽式伴随加热法
- It is one of the most ideal traps in boiler system steam tracing and midget heating system. 在供热系统中的蒸汽主管线和小型加热设备是最理想的疏水阀之一。
- Heat evaporates water into steam. 水受热变成水蒸汽。
- Water is changed into steam by heat and into ice by cold. 水加热则成为蒸汽，冷却则成为冰。
- The steam tug takes canal boats and barges in tow. 驳船后面拖着小艇和平底船。
- The mirror fogged up with the steam. 镜子因蒙上水气而模糊不清。
- The engines are driven by steam. 这些发动机是由蒸汽驱动的。
- I can't trace that letter you sent me. 我找不到你寄给我的那封信。
- He spoke without a trace of emotion. 他说话时毫不动感情。
- Did the police find any trace of the murderer? 警方找到凶手的行踪了吗？
- Parents must let children blow off steam sometimes. 做父母的有时必须让孩寸们吵吵闹闹，发泄发泄。
- They failed to find any trace of the runaways. 他们未能找到逃跑者的任何踪迹。
- The movement continued to pick up steam. 这场运动继续在加速进行。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- There was barely a trace of salt in the soup. 汤里简直一点盐也没有放。
- The post office tried to trace the lost letter. 邮局设法查出那封丢失的信。
- The kids are learning to trace the letter. 孩子们学描字母。
- Insulation used to prevent heat diffusion, as from a steam pipe. 绝热材料用来防止热量散失的绝热材料，如从蒸汽输送管上
- He always spoke with a trace of sarcasm. 他说话总带着一丝讽刺。
- In1768 the first steam engine appeared. 在1768年出现了第一部蒸汽机。
