您要查找的是不是：
- An inflatable PFD has less bulk and interference than a foam unit, but is ready to provide flotation during an unexpected entry into the water. 可膨胀的PFD有较少的体积和没有了干扰泡沫单位,但在想不到的进入水后实时提供漂浮。
- Polyurethane foam unit (PFU) method PFU方法
- polyurethane foam unit(PFU) method 聚氨酯泡沫塑料块法
- The luminous intensity on unit area. 单位面积上的发光强度。
- The surface of the water is full of foam. 水面都是泡沫。
- The ship's propeller churned the waves to foam. 那条船的推进器把水浪搅动得泡沫四起。
- Foam rubber provides good insulation. 泡沫橡胶隔绝性能良好。
- The family is the smallest social unit. 家庭是社会最小的单位。
- A mass of bubbles in or on a liquid; foam. 泡沫液体中的大量气泡; 泡沫
- Pressure is force per unit area. 压力就是电单位面积上的力。
- A set of data elements which are handled as a unit. 作为一个单元来处理的一组数据元素。
- The family is the basic unit of society. 家庭是社会的基本单位。
- The breaking waves left the beach covered with foam. 浪花弄得海滩都是泡沫。
- A metric unit of area equal to 10 ares. 十公亩面积的公制单位之一，等于十公亩。
- A metric unit of mass equal to 100 grams. 百克公制质量单位，等于100克。
- A unit of power equal to 1,000 watts. 千瓦功率的单位，等于1,000瓦。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- When the horse had finished the race, its sides were wet with foam. 这匹马结束比赛时，它的脊背被汗水湿透了。
- A unit of currency in Chile, Panama, and Uruguay. 分智利、巴拿马和乌拉圭的货币单位
- Foam rubber is soft rubber full of small air-bubbles. 泡沫橡胶是充满了小气泡的软橡胶。
