unbacked

adj.

无靠背的；未驯服的；无助的；无人押注的

Preparation of unbacked metallic film.
Method of forming a thin unbacked metal foil
Method of fabricating unbacked surface coverings
Method for producing an unbacked tension floor
Increase in Transmittance of Unbacked Aluminum Filters Exposed to rf or dc Discharges in Oxygen
An empirically plausible model of low real interest rates and unbacked government debt
Transmission ellipsometry on transparent unbacked or embedded thin films with application to soap films in air
The taxation of savings in overlapping generations economies with unbacked risky assets
Another Application of Diffuse Reflectance Attachment: IR Spectra of Unbacked Polymer Films up to 3 mil Thickness
Polarizing beam splitters for infrared and millimeter waves using single-layer-coated dielectric slab or unbacked films