V to refill an excavated trench, esp (in archaeology) at the end of an investigation (尤指考古挖掘后)重新填埋坑、壕
N the soil used to do this 回填土
The gravel is one of the most common materials for abutment backfilling.
砂砾是台背回填工程常用的回填材料之一。
Not backfilling silt, corruption and graft, permafrost soil organic matter.
不得回填淤泥、腐植土、冻土及有机物质。
Through the experiments, the mixture ratio of cemented crushed stone backfilling materials was optimized.
通过试验，优化了碎石胶结充填料配比。
Scheduling of parallel jobs is usually viewed in terms of a 2D chart with time along one axis and the number of processors along the other axis. Each job can be thought of as a rectangle whose height is the user estimated run time and width is the number of processors required. Parallel job scheduling strategies has been widely studied in the past
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