Use one-frame use of the high pass filter adaptive threshold suppression methods such as the background noise and enhance a small target the likelihood detection can eliminate the weak noise neighborhood judgment of a candidate from target points .

利用单帧内的高通滤波、自适应阈值等方法抑制了背景噪声，增强了小目标，似然检测可以消除 弱噪声干扰点，邻域判决法提取出 候选目标点。

Since its signal is extreme weak it is necessary to use some special techniques where M-ary spread spectrum technique is a very useful candidate .

由于SOC的信号极其 微弱，信干比很 低，所以必须采用一些特殊技术，其中M元扩频技术就是一种有用的 技术。

Due to the weak spin-orbital coupling and hyperfine interaction the carriers in organic materials have a relative long spin relaxation time so it is a good candidate for spin injection and transport .

有机材料具有 较弱的自旋-轨道耦合作用和超精细相互作用，载流子的自旋弛豫时间比较长，因而是理想的实现自旋极化注入 候选材料。

Mr Obama was fortunate in his opponent . A weak economy coincided with a weak Republican candidate .

当 疲弱的经济遇上 缺乏 竞争力的共和党 候选人奥巴马 应该庆幸他遇到了罗姆尼这位对手。