Time & Material 按人天计价
near real time material accountancy 近实时物料衡算管理
time & material contracts 材料合同
T&M time and material 时间和材料 ; 工夫和材料
material time 关键时间 ; 实际时间
T&M Time and Material Contract 时间和材料合同
real-time material system [计] 实时材料系统
Just in time material supply 即时物料供应
heat up time of material 物料受热时间
He found that the length of time it takes a sound's echo to decay is determined by the absorption of the sound's original energy by surrounding material.
他发现，声音回声衰减的时间长短取决于周围物质对声音原始能量的吸收。
The orderly nature of our solar system leads most astronomers to conclude that the planets formed at essentially the same time and from the same material as the Sun.
我们太阳系的有序特性使大多数天文学家得出结论，这些行星基本上在同一时间形成，且物质来源和太阳的一样。
That gives them more time to absorb lectures via podcast or video, and frees teachers to spend class time coaching students in how to apply the material rather than simply absorb it.
这样他们就有更多的时间通过播客或视频来吸收课程内容，老师也可以腾出时间来指导学生如何应用所学内容，而不是仅简单地吸收。
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