时间防护

在手术时，备用人员在铅屏风后面等候或离诊断床稍远一些，将时间防护、屏蔽防护和距离防护进行合理利用。

When operation going along , someone of standby is waiting for behind lead screen , we make use of time protection , shield protection and distance protection correctly .

结论抱立位透视实用方便，患儿多配合良好，有助于缩短X线曝光时间、防护患儿。

Conclusion : Chest X-ray with hugged-erect position in children is applicable and convenient and the children are cooperative , which contributes to shortening x-ray exposure time and protecting children from more X-ray injury .

结论介入操作中应从屏蔽防护、距离防护和缩短照射时间进行防护，减少操作者的辐射危害保障健康。

Conclusion The X ray radiation protection should be carried out from shielding protection , distance protection and radiation time reducing ; That can reduce the damage of radiation to keep the operator healthy .

分别给出了2幢大楼拆除爆破参数、起爆延期时间及安全防护措施。

The blasting parameters and protection measures were presented and taken .

我们已经没有时间来启动防护层了。

We have little time to get the shields activated .

探讨在复杂环境条件下爆破参数、爆破网路、延时时间、安全防护措施的选择和爆破切口范围的确定。

The design blasting parameters , blasting net , delay time , defending measure selection and gap length determination in complicated environment are discussed .

目的：研究蚊香实验室药效与现场实际应用效果及蚊香使用时间长短对防护效果的影响，并分析现行蚊香药效试验及评价标准的适用性；

Objective : T6 study the efficacy of mosquito-repellent incense in lab and application in field test , the affection of application duration to protection effect .