林分平均木胸径总、平均和连年生长量最好。
The total, average and current annual increment of breast diameter of stand average stem are best.
类地行星的密度的平均值大约是水的密度的五倍，而类木行星的密度平均值只有水的密度的1.5倍。
The densities of the terrestrial planets average about 5 times the density of water, whereas the Jovian planets have densities that average only 1.5 times the density of water.
原因之一是，在平均水平线下，德国这架喷气发动机所带来的增长被地中海橄榄木和爱尔兰的亚麻布构成的摇摇晃晃的双翼飞机消磨殆尽。
One reason is that, beneath the average, a German jet engine is ripping away from a rickety biplane made of Mediterranean olive-wood and Irish linen.
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