求翻译：先导化学物。特点：快速、短期、化学物样本量消耗量少、灵活、动态、根据实际情况不断地调整和完善、不受GLP规范约束的毒性筛选和评价。主要包括、短期和高通量毒性筛选、毒理学模型、相似性化学物特征性基因组和蛋白质组表达谱、代谢谱预测标志物(preditive marker)、替代终点(sumoagereddpoint)等的分析,从而预测和评价化学物的毒性。是什么意思？

Precursor chemicals. Features: Fast, short-term, less chemical consumption of sample size, flexible, dynamic, constantly adjusted according to actual situation and improve, not bound by GLP standard toxicity screening and evaluation. Include short-term and high-throughput toxicity screening, toxicol

pilot chemical. Features: rapid, short-term, chemical sample volume less consumption, flexible and dynamic, based on actual constant adjustment and perfect, not bound by GLP norms of toxicity screening and evaluation. Main including, short-term and high-flux toxicity screening, toxicology models, si

Forerunner chemical material.Characteristic: Fast, short-term, chemical material sample size consumption few, nimble, tendency, basis actual situation unceasingly adjustment and consummation, not GLP standard restraint toxic screening and appraisal.Mainly includes, short-term and high flux toxicity

Precursor chemicals. Features: fast, short, chemical substance consumption sample size is small, flexible, dynamic, according to the actual situation constantly adjust and improve, are not subject to GLP toxicity screening and evaluation of normative constraints. Including, short-term and high throu

Precursor chemicals. Features: fast, short, chemical substance consumption sample size is small, flexible, dynamic, according to the actual situation constantly adjust and improve, are not subject to GLP toxicity screening and evaluation of normative constraints. Including, short-term and high throu