本文按化合物类型介绍了需光性除草剂的开发。
Recent advances on perioxidizing herbicides were briefly reviewed in this paper.
这相当于一个光声版本的无线电频率条形码，可以用在需通过自动收费站的车上，或者给商品打价签。
This could be used like an optoacoustic version of the radio-frequency bar codes that are used by cars passing through the pay booths of automated toll roads or to tag some goods in shops.
晶体倍频中当晶体表面法线与相位匹配方向不一致时，需调整入射光方向使相位失配最小。
It is necessary to adjust the direction of incident light for minimum phase mismatching when the direction of phase matching deviated from crystal normal direction.
要实现对单细胞的光学检测，需容积小、光学收集效率高、低噪声的检测器和低的背景光。
To achieve the optic detection in individual cell, it is prerequisite for optical detector to be tiny volume, highly optical collection - efficiency, low noise and light background.
根据线结构光传感器的特点，提出了一种线结构光传感器的快速标定方法，利用摄像机投影中心及光条在摄像机像面上的信息，仅需一共面靶标即可实现摄像机与光平面之间位置参数的标定。
With the coplanar reference target, the spacial pose between camera and optical plane can be calibrated by using the cameras projective center and the lights information in the cameras image surface.
结论儿童的屈光状态随年龄在不断地变化，故需追踪观察。
Conclusion Along with age child's refraction condition is in change, therefore the tracing observation is needed.
可精确定位发射器：导向射束可精确表明需进行X光检查的区域。
For exact positioning of the emitter: the pilot beam indicates exactly which area will be X-rayed.
室内室外光地无任何配置，特装展台装修需向组委会申请电源及支付光地管理费用。
For bare booth or space nothing is equipped. For any stand to be specially installed, you should request for power supply at Organization Committee and pay for bare and space management.
一般来说，烤漆房内明亮度需达到800-1000勒克思，而且需要使用接近D65光源的灯光，同时房内墙壁应为哑光白色；
Generally speaking, all the brightness of paint room to meet 800-1000 Lex, and require the use of D65 light source close to the light, and the walls of the room should be matte white;
一般来说，烤漆房内明亮度需达到800-1000勒克思，而且需要使用接近D65光源的灯光，同时房内墙壁应为哑光白色；
Generally speaking, all the brightness of paint room to meet 800-1000 Lex, and require the use of D65 light source close to the light, and the walls of the room should be matte white;
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