有效的

• the penetration of a virus into the cell is most efficient at 37℃.
  病毒穿入细胞最有效的温度是37。
• The market fails to provide for an efficient level of conservation effort .
  市场并没有对水土保持工作提供一种有效的手段。
• An administrative order is valid if authorized by a statute .
  如果一个行政命令得到一个法规的认可那么这个命令就是有效的。
• Radiometric techniques are not always appropriate to search for uranium deposits .
  放射性方法在铀矿普查中并不总是有效的。
• Annuals, as a general rule, are very responsive to phosphorus fertilization .
  通常说来，对一年生植物施用磷肥是相当有效的。
• To be economical these processes will require efficient solvent recovery operations .
  若要经济，就要有有效的溶剂回收工序。
• Yet in practice it has not been effectively treated by economic planners .
  然而，经济计划者还未在实践上对它进行有效的探讨。
• We had found concealment in the previous war a good security .
  在上次大战中，我们曾经发现一个有效的安全措施，就是躲藏起来。
• Radiometric techniques are not always appropriate to the earth for uranium deposits .
  放射性方法在铀矿普查中并不总是有效的。
• It is effective to paint the bulb of a thermometer with a little aluminum paint .
  在温度计的玻泡上稍微涂点铝粉涂料是很有效的。