freehand

adj.& n.

徒手画（的）；

freehand sketch徒手画的草图

1. The school is marked by exaggerated forms and freehand brush work.
   该画派以夸张的形式和徒手随意描绘著称。

1. I can't draw very well freehand.
   我徒手画画得不很好。

In vivo real-time freehand palpation imaging
In vivo real-time freehand palpation imaging.
Freehand ultrasound elastography of breast lesions: clinical results.
Rapid calibration for 3-D freehand ultrasound
Freehand image scanning device which compensates for non-linear movement
Distant freehand pointing and clicking on very large, high resolution displays
Registration of freehand 3D ultrasound and magnetic resonance liver images
SmartSkin: an infrastructure for freehand manipulation on interactive surfaces
SmartSkin : An Infrastructure for Freehand Manipulations on Interactive Surfaces
Optimization-based reconstruction of a 3D object from a single freehand line drawing