Astronomers have long speculated that the missing baryonic mass might eventually be discovered in intergalactic space or as some large population of galaxies that are difficult to detect.
天文学家长期以来都在推测，最终可能会在星际空间或者是在难以探测的大量星系中发现丢失的重子质量。
The outbreaks will be difficult to detect and control in rural backyard flocks.
在农家后院的鸡群中发现和控制禽流感暴发将是极为困难的。
This form of TB is difficult to detect, even with sophisticated laboratory tests.
这种形式的结核病即使是通过先进的实验室检测，也很难发现。
Unfortunately, neutrinos' immutability also makes them rather difficult to detect.
很不幸，中微子的稳定性也使得它非常难以被探测到。
I'm not saying it's undetectable, but I do think it would be difficult to detect.
我不是说这是不到的，但我认为那将是难以察觉。
Deviations of that size spread over a large area can be difficult to detect by measuring.
尺寸传遍一个大的地区的那的偏差可能是难的透过测量发现。
But it is difficult to detect and treat, so many women opt to have their ovaries taken out.
不过，卵巢癌很难诊断，也很难治疗，因此，许多妇女选择了摘除卵巢。
In the rolling process of plate stripe. it is difficult to detect the stripe depth on line.
在板材纹路压制加工中，纹路深度的在线检测十分困难。
Computer crimes, which are difficult to detect, cause a lot of trouble to business and industry.
电脑犯罪行为很难发现，却可以对商业和工业造成很大的麻烦。
We suspect the tumour GREw on a stalk at the back of her mouth which is very difficult to detect.
我们怀疑肿瘤长在喉咙后部的息肉上，这很难检测到。
But there are many noises in ground lines, which make it difficult to detect insulator corona pulses.
但是，接地线上有许多干扰，如果不消除它们，绝缘子电晕脉冲很难测到。
It's difficult to detect blindly the image rotation Angle in blind watermarking under geometry attack.
抗几何攻击的盲检测数字水印的难点是图像旋转角度的盲检测。
Through the experiment and analysis, this scheme has high security, big, quick and difficult to detect.
通过试验和分析发现该方案具有安全性好、隐藏数据量大、速度快不易被检测等优点。
It is difficult to detect effectively these distributed attacks by the current intrusion detection approaches.
现有的入侵检测方法难以有效地检测这种分布式的入侵行为。
Because the sensor drift is generally small and usually covered by noise, it is difficult to detect it sensitively.
但由于传感器的漂移量一般比较小，且常常被噪声所覆盖，因此难于及时、有效地检测出来。
This will help later when the screensaver is running and it is more difficult to detect if you are knocking correctly.
这可以在屏保运行时提供很好的帮助，它更难检测出敲打是否正确。
Yet is the premalignant lesion the readily recognized intestinal metaplasia or the more difficult to detect dysplasia?
然而癌前病变是已经公认的肠化生还是更难于探及的不典型增生。
The proposed method excellently solves the technical problem that common instrument is difficult to detect weak signal.
这种方法很好地解决了通用仪器难于检测微弱信号的技术不足。
At night, it's the extra-sensitive rods that take over — this is why it's difficult to detect color in low levels of light.
夜间，特别敏感的视杆细胞在眼睛视物占有主导地位—这就是为什么在昏暗的光线条件下我们很难看到事物的色彩。
An enemy microsatellite would be difficult to detect, and could even be contained inside a larger, harm less-looking satellite.
敌方的微型卫星很难被发现，而且它可能就隐藏在一个看上去没有危险的大型卫星里。
Is the premalignant lesion to be detected the readily recognized intestinal metaplasia or the more difficult to detect dysplasia?
公认的肠化生或更难发现的异型增生是否做为癌前病变得到检测？
It is difficult to detect the absolute density of rock by ct image in quantitative analysis of rock damage process in compression.
用CT图像定量分析岩石受力损伤破坏过程的难点，是难以知道岩石内部的绝对密度变化量。
A new method of pulse peak detection is designed and the problem that the peak of the narrow pulse is difficult to detect is solved.
采用了新颖的脉冲电流幅值检测方法，解决了窄脉冲电流幅值难以检测的问题。
But the major American problem is anti-submarine warfare, because even elderly diesel-electric boats have proved difficult to detect.
但美国主要的问题是反潜战，因为甚至陈旧的柴电潜艇被证实也难以发现。
Furthermore, it's somewhat difficult to detect, depending on where you place your patches and whether or not you use inline function hooks.
此外，它相对地难以探测，这取决于你把补丁放在哪里以及你是否使用嵌入函数挂钩。
It may be particularly difficult to detect lies in close friends or partners as we have come to trust them and don't expect them to lie to us.
密友和伴侣的谎言尤其难以发觉，因为我们信任他们、不会想到他们会说谎。
These medial calcium deposits may contribute to cardiovascular disease risk by making the arteries stiffer, but they can be difficult to detect.
而内侧钙化有可能造成患心血管疾病的风险，但采用以往的方法很难检测到。
Experts stressed that the ash, in tiny particles and difficult to detect, was no danger to public health but posed a distinct danger to aircraft.
专家们强调，微小颗粒的灰尘不易察觉，是不会危害公众健康危险，但是极易对飞机构成威胁。
Experts stressed that the ash, in tiny particles and difficult to detect, was no danger to public health but posed a distinct danger to aircraft.
专家们强调，微小颗粒的灰尘不易察觉，是不会危害公众健康危险，但是极易对飞机构成威胁。
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