已知的

• A seismometer is a seismograph whose physical constants are so well known .
  地震计是一种地震仪器，其物理常数是已知的。
• How would you determine the best span of management in a given situation ?
  在已知的条件下，你应如何确定最佳的管辖幅度？
• This is not at all characteristic of what is known concerning the dry aerosol .
  这根本不是我们已知的有关于气溶胶的特征。
• A known gene with a desirable quality can be inserted into a rice plant .
  一种已知的品质优良的基因可以被移植到水稻体内。
• The paths of the forces through the structure are limited to a few well-defined lines .
  力的传递路线只限于几种已知的路线。
• This, too, was something which was completely at variance with the known laws of nature .
  这同样完全不符合当时已知的自然法则。
• Of about 1, 000 different nuclides now known, only about one-quarter are stable .
  在目前已知的约1000种不同的核素中，大约只有四分一是稳定的。
• There is some choice as to the degree of decomposition which is suitable for a given problem .
  对于一个已知的问题，剖分程度可以有不同的选择。
• Nominal diameter is the diameter of a sphere of the same volume as the given particle .
  “等容粒径”是某一球体直径，它与某已知的颗粒体积相等。
• Out of quantum electrodynamics come all known electrical, mechanical, and chemical laws .
  从量子电动力学可以得出所有已知的电学、力学和化学定律。