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

• You can also induce the cells by using compounds called precursors to produce other new compounds by way of biotransformation.
  你还可以用前体化合物让细胞通过生物转化的方式制造其他新的化合物。
• 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。
• German World War Two rocket weapons were the precursors of modern space rockets.
  德国在二战中的火箭武器是现代航天火箭的前身。
• For precursors, confidence would come from empirical observations; understanding mechanisms would be desirable but not necessary.
  对前兆来讲，信心来自经验主义的观察；理解机制是期求的，但并非必要。
• 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。
• 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
• Both insulin resistance and fat-marbled muscles are metabolically unhealthy conditions that can be precursors of diabetes.
  从新陈代谢角度来说，胰岛素抵抗和肌肉中脂肪赘生都是不利健康的，是患上糖尿病的先兆。
• 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。
• 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。
• Effect of infrasound on the proliferation of neural precursors in the subventricular zone of adult rats
  次声对成年大鼠脑室下区神经前体细胞增殖的影响