precursors

英 [pri(ː)ˈkɜːsəz]

美 [priˈkɜrsərz]

n.  先驱; 先锋; 前身
precursor的复数

柯林斯词典

• N-COUNT 先驱；先锋；前身
  Aprecursorof something is a similar thing that happened or existed before it, often something which led to the existence or development of that thing.
  1. Real tennis, an ancient precursor of the modern game, originated in the eleventh century...
     室内网球，现代网球运动的古老前身，起源于11世纪。
  2. He said that the deal should not be seen as a precursor to a merger.
     他说该笔交易不应该被看作是合并的前兆。

双语例句

• Effect of Amino Acid Precursors on Callus Growth and Taxol Content
  几种氨基酸前体物对红豆杉愈伤组织的生长和紫杉醇含量的影响
• The statistical inspection of the relationship between precursors and earthquakes plays a very important role in probability prediction.
  前兆和地震之间的关系的统计检验对于概率预测起着十分重要的作用。
• Most of the metabolites were flavoring compounds and flavoring precursors for food, and also an integral part of aroma-producing& flavoring-producing substances in Maotai liquor.
  这些物质中有多种是食品中的风味物质和风味前体物质，亦是茅台酒众多呈香呈味物质中的组成部分。
• Experimental research through to the removal of organic pollutants in the water, disinfection by-products of the precursors to improve the quality of drinking water.
  通过试验研究，达到了去除水中有机污染物、消毒副产物的前体物，提高饮用水水质的目的。
• The mediaeval burgesses and the small peasant proprietors were the precursors of the modern bourgeoisie.
  中世纪的城关市民等级和小农等级是现代资产阶级的前身。
• Research on statistical distribution of pollutants in municipal wastewater RELEASE OF NO_x AND ITS PRECURSORS DURING COAL GASIFICATION
  城市污水中污染物监测与分布规律探讨煤气化中NO2及其前驱物释放规律研究
• Likewise, increased XOR levels hiked activity of the PPAR-gamma receptor in both fat cells and fat cell precursors.
  同样，增加XOR水平会增强脂肪细胞和脂肪祖细胞中的γ-PPAR受体的活性。
• They can be used in researches of seismic precursors, and have made many contributions to exploration of subsurface structure.
  在地震前兆的探讨方面占有一席之地；在探测地下构造中有许多贡献。
• The mechanism of many earthquake precursors is related to fluids deep inside the Earth.
  许多地震前兆的机理与地球深部流体相关。
• Cobalt salt was employed as catalyst precursors, copper plate as substrate and ethanol as carbon source.
  采用乙醇催化燃烧法，以钴盐作为催化剂先体、薄铜片作为基底制备碳纳米管。