The lesioninvolves the lateral wall of the sphenoid sinus extending into the rightorbital apex, as demonstrated by loss of normal fat attenuation in thislocation.
此病变累及蝶窦外侧壁，侵入右侧眶尖，表现为此处正常脂肪消失。
Mean CT attenuation values between normal pancreas and tumor and the number of metastasis of liver during the different phases were compared.
比较各期扫描正常胰腺组织与肿瘤的密度差异和肝转移瘤的发现率。
Periodical attenuation of particles, which interferes seriously with the normal alumina production of Bayer method, exists in the alumina production process of Bayer method.
在拜耳法氧化铝生产中粒度依然存在着周期性细化现象，严重影响到拜耳法系统的正常运行。
Periodical attenuation of particles, which interferes seriously with the normal alumina production of Bayer method, exists in the alumina production process of Bayer method.
在拜耳法氧化铝生产中粒度依然存在着周期性细化现象，严重影响到拜耳法系统的正常运行。
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