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汉语拼音：shù liàng jí

量度或比较某些数量大小时常用的概念。通常把一个数量写成10的幂指数形式时，指数的数目就是该数量的数量级。如地球半径约6400千米，用厘米为单位时可写成64×10８厘米，它的数量级就是8。

• With that level of object churn going on there was no question that garbage collection was going to be a problem.

  对于这样一种数量级的对象群来说，垃圾回收毫无疑问会成为一个问题。

• The little volume elements are going to be on the order of an angstrom cubed if it's an atom, a little bit bigger if it's a molecule.

  每个小体积有1埃的3次方个数量级，对于原子来说，如果对于分子则要大一点。

• "This [date] is not just a little bit wrong, but far out ofany order of magnitude, " he said.

  “这（日期）不是个小错误，而是远远超过任何数量级的错误。”他说。

• P is also known to be at least as large as L , the class of problems decidable in a logarithmic amount of memory space.

  P也已知至少大于L一个可在对数量级的记忆体空间上决定的问题的类别。

• It may not have been precisely accurate, but it had a sort of "order of magnitude" ring of truth to it.

  这个数字也许并非非常精确，但是大概可以反映“数量级”的真实情况。

• The processing time of kinematics could be reduced by over two orders of magnitude and processing speed of the system was also improved.

  该设计将运动学计算时间降低了两个数量级，提高了系统的有效处理速度。

• The gravimetric hydrogen production rate exceeds that of other solar-driven thermochemical processes by more than an order of magnitude.

  而分解出氢的效率以重量计算可比其它太阳能热制程的效率高出一个数量级。

• All Web sites should be ready to handle traffic several orders of magnitude greater than normal load.

  所有Web站点都应该准备好处理比普通负载高几个数量级的通信量。

• The results of calculation indicate that the blade frictional torques have a magnitude equal to that of the driving torques.

  计算表明作用于叶片上的粘性摩擦阻力矩的大小具有与驱动力矩相同的数量级。