他们也放弃使用任何矫正透镜，而是通过一个针孔发射X光射线，然后采集经过样品后的衍射光线。
They also abandoned using any corrective lenses, firing the X-ray pulse through a pinhole and then collecting the diffracted rays after they pass through the sample.
天文学家发现“X射线估算的质量”仅有“引力透镜”方法估算的质量的十分之一。
The astronomers found an "X-ray mass" only a tenth of the mass found using the gravitational lens method.
但是X光射线图像本身也有自己的问题，比如X光射线难于聚焦，甚至在使用矫正透镜的情况下也难于控制。
But X-ray imaging has its own problems, with X-rays difficult to focus or manipulate even with corrective lenses.
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