This strategy, known as pre-exposure prophylaxis, or PrEP, is based on the concept that blocking HIV's replication immediately after exposure to the virus may prevent infection.
这一策略被称为“暴露前预防”(PrEP)，是建立在这样的概念基础上：在接触病毒之后立即阻断HIV的自我复制可以预防感染。
The speedlight will pre-flash that area and lock that exposure into memory. I might caution you that you have 16 seconds to then recompose and take the shot.
闪光灯会预闪并把曝光值记忆下来，注意你只有16秒的时间重新构图拍摄。
The main parts include density adjustment, exposure adjustment, pre-printing adjustment and uniformity correction.
其主要环节包括密度校正、曝光量校正、均匀性校正、印前预校色等。
The procedure is rapid and easy to perform without restricted access to the patient and-by replacing pre - and postoperative imaging-is not associated with an additional exposure to radiation.
步骤简单迅速无禁忌，并且由于其替代了术前及术后的拍片，其射线量并无任何增加。
A composite fiber Bragg grating based on pre-exposure technology is described in this paper.
报道利用预曝光技术制备的复合结构光纤光栅传感器。
Different day and night pre-sets for the exposure settings can?be defined and adjusted.
可以设定和调整白天和夜间的曝光预设。
The procedures of mesh stretching, pre-treatment, emulsion coating, exposure and developing are all explained both in theory and practice.
对绷网、前处理、涂覆感光乳剂、曝光、显影等各工序的技术细节从理论上和实践上作了详尽的解释与说明。
Whether your camera is capable of Manual mode, or has one or two pre-flashes to set exposure, the Nano flash ensures correct exposure with all such camera types.
无论你的相机能够手动模式，或有一个或两个前闪光曝光设置的纳米闪存确保与所有这些相机类型正确曝光。
The estimation of background AD exposure parameter is important for pre-event negotiation and bidding and post-event sponsoring assessing.
背景广告曝光参数的测算对于赛事的赞助评估、赛事谈判和赛事申办决策具有重要的意义。
"On a lark, I decided to take a long-exposure fluorescent image of a pre-hatchling salamander embryo," says Kerney.
“抱着随便玩玩想法，我决定对一个还没孵化蝾螈胚胎进行长时间荧光照射并观察了其图像，”克尼说。
"On a lark, I decided to take a long-exposure fluorescent image of a pre-hatchling salamander embryo," says Kerney.
“抱着随便玩玩想法，我决定对一个还没孵化蝾螈胚胎进行长时间荧光照射并观察了其图像，”克尼说。
应用推荐