The density changes very little after soaking when the compactness of aeolian sand is above 90%.

风积沙的压实度达90%以上时，浸水所造成的密度改变很小。

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Model tests of large driven pile jacked into sands were conducted to obtain the soil density changes due to the compaction.

通过砂土中的大型沉桩模型试验，得出了桩周土体相对密度的变化规律。

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There is no current flowing through any node(or antinode. ), but the current density changes periodically with time at other places.

没有能流通过节点（或腹点），但在其他各点，能流密度随时间作周期性变化。

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Each car starts with a certain position and speed, and the road thus has a particular density of cars that changes as they move along, and as new cars are injected from a junction slip-road.

ECONOMIST: Traffic management: Desynchronised | The

It's an airtight pod that changes air pressure, temperature and density.

WSJ: One Kid's Personal Tennis Academy

Double your vegetable intake and reduce fat -- Both of these changes will significantly decrease the calorie density of your diet without decreasing the volume of food that you consume.

CNN: How can I maintain my energy level for sports while on a diet?