effect of exposure time

The only proven biological effect of radiation at Chernobyl was an increase in thyroid cancer among those who were children at the time of exposure.

托马斯（Gerry Thomas）指出，切尔诺贝利核扩散可能增加儿童甲状腺癌症发生率的风险性预测，唯一能得到生物学效应证明的只是那些当时直接暴露在核辐射下的儿童。

The effect of working parameters on the erosion performance of underwater jet is investigated, such as , simulated depth, stand off distance and exposure time.

试验研究了模拟水深、靶距及冲蚀时间对水下射流性能的影响关系，较全面地揭示了水下射流的特性。

Conclusion Exposure to high levels of noise would be harmful to worker's personality trait but without accumulated effect as time proceeded.

结论强噪声作业对作业人员人格特征有不良影响，但不具有时间剂量上的累积效应。