这点带给我们新的原则：比以前少一点曝光。
This brings us to the truly new principle: embracing much more openness than ever before.
第三条联合曝光遵循客观、公正、公开、公平、监督、谨慎的原则。
The third joint exposure follow objective, fair, open, fair, supervision, the principle of caution.
结果：得到了曝光指数变量方程和杠杆平衡原则。
Results: Develop an exposure level principle and create an exposure dial.
目的：通过测试数字成像设备的X线机管电压和曝光时间稳定性，探讨数字成像摄影条件的选择原则。
Objective:To obtain suitable digital radiologic exposure factors of CR and DR by measuring stability of their X-ray tube voltage and exposure time.
目的：通过测试数字成像设备的X线机管电压和曝光时间稳定性，探讨数字成像摄影条件的选择原则。
Objective:To obtain suitable digital radiologic exposure factors of CR and DR by measuring stability of their X-ray tube voltage and exposure time.
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