伪目标是为了组织结构的目的而设计的，这在编写一个清晰的makefile时是种非常不错的技术。
Phony targets are used for organizational purposes and are a wonderful thing in writing a clear and legible makefile. For instance, one often sees rules like this.
目的：通过志愿者口腔内实验，观察不同牙位不同修复形式的镍铬合金固定修复体在磁共振成像（MRI）检查时的伪影表现及其对毗邻组织成像的影响；
Objective: To observe the image and the influence on adjacent tissue of fixed prosthesis made of Ni-Cr alloy for different teeth and different kinds in magnetic resonance imaging(MRI)testing.
高强度聚焦超声治疗系统超声成像中产生的雾状伪像，掩盖了人体组织的真实成像，影响了HIFU治疗的安全性和有效性。
The real image of tissue component is covered by fog artifact which results from ultrasonic imaging in HIFU therapeutic system.
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