Using the attached text, what is each acronym and what does it mean? If it isn't interpreted in the text, don't mention it.

A typical HMD has one or two small displays, with lenses and semi-transparent mirrors embedded in eyeglasses (also termed data glasses), a visor, or a helmet. The display units are miniaturized and may include cathode ray tubes (CRT), liquid-crystal displays (LCDs), liquid crystal on silicon (LCos), or organic light-emitting diodes (OLED). Some vendors employ multiple micro-displays to increase total resolution and field of view.

HMDs differ in whether they can display only computer-generated imagery (CGI), or only live imagery from the physical world, or combination. Most HMDs can display only a computer-generated image, sometimes referred to as virtual image. Some HMDs can allow a CGI to be superimposed on real-world view. This is sometimes referred to as augmented reality (AR) or mixed reality (MR). Combining real-world view with CGI can be done by projecting the CGI through a partially reflective mirror and viewing the real world directly. This method is often called optical see-through. Combining real-world view with CGI can also be done electronically by accepting video from a camera and mixing it electronically with CGI.
system
sanlagn paath kaa upyog karte hue, prayek kaa sankshipt naam kya he or iskaa kya matlab he?yadi isaki vyakhya paath main nahin kii gai he, to iskaa ullekh na karen.

ek vishisht echemadi main ek yaa do chote disple hote hai, jisamen lens or ardh-paardarshee darpan chashma main ambeded hote hai (jise data chashma bhi kaha jaataa he), ek chazza, yaa ek helmet.disple ikaiyaan choti hoti hai or isamen cathod re tub (CRT), liquid-crystal disple (LCD), silicon par liquid crystal (LCOS), yaa organic lite-emiting diod (OLED) shaamil ho sakate hai.kuch vikreta kul rizolution or dekhne ke kshetra ko badhaane ke liye kai micro-disple ko niyukt karte hai.

echemadi main bhinnata he ki kya ve keval computer-janit imageri (sijiai) pradarshit kar sakate hai, yaa keval bhautik duniya yaa sangyojan se live imageri.adhikansh echemadi keval ek computer-janit chhavi pradarshit kar sakate hai, jise kabhi-kabhi abhaasi chhavi ke rup main sanderbhit kiya jaataa he.kuch echemadi ek sijiai ko vaastavik duniya ke drishy par aropit karne kii anumati de sakate hai.ise kabhi -kabhi sanvardhit vaastaviktaa (eaar) yaa mishrit vaastaviktaa (emr) ke rup main janaa jaataa he.CGI ke saath vaastavik duniya ke drishy ko milakar CGI ko aanshik rup se chintansheel darpan ke madhyam se project karke or vaastavik duniya ko sidhe dekhakar kiya ja saktaa he.is vidhi ko aksar optical si-thru kaha jaataa he.sijiai ke saath vaastavik duniya ke drishy ko milakar bhi electronic rup se ek camere se video sweekaar karke or ise electronic rup se sijiai ke saath milakar kiya ja saktaa he.
user
CRT kaa arth cathod re tub he.alsidi liquid-crystal disple he, elsio silicon par liquid crystal ke liye khadaa he, or oelidi dwaara carbonic prakaash utsarjak diod kaa pratinidhitiv kiya jaataa he.CGI kaa arth computer-janit imageri he or AR sanvardhit vaastaviktaa kaa pratinidhi he.emr mishrit vaastaviktaa he.
assistant
<|system|>
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<|user|>
sanlagn paath kaa upyog karte hue, prayek kaa sankshipt naam kya he or iskaa kya matlab he?yadi isaki vyakhya paath main nahin kii gai he, to iskaa ullekh na karen.

ek vishisht echemadi main ek yaa do chote disple hote hai, jisamen lens or ardh-paardarshee darpan chashma main ambeded hote hai (jise data chashma bhi kaha jaataa he), ek chazza, yaa ek helmet.disple ikaiyaan choti hoti hai or isamen cathod re tub (CRT), liquid-crystal disple (LCD), silicon par liquid crystal (LCOS), yaa organic lite-emiting diod (OLED) shaamil ho sakate hai.kuch vikreta kul rizolution or dekhne ke kshetra ko badhaane ke liye kai micro-disple ko niyukt karte hai.

echemadi main bhinnata he ki kya ve keval computer-janit imageri (sijiai) pradarshit kar sakate hai, yaa keval bhautik duniya yaa sangyojan se live imageri.adhikansh echemadi keval ek computer-janit chhavi pradarshit kar sakate hai, jise kabhi-kabhi abhaasi chhavi ke rup main sanderbhit kiya jaataa he.kuch echemadi ek sijiai ko vaastavik duniya ke drishy par aropit karne kii anumati de sakate hai.ise kabhi -kabhi sanvardhit vaastaviktaa (eaar) yaa mishrit vaastaviktaa (emr) ke rup main janaa jaataa he.CGI ke saath vaastavik duniya ke drishy ko milakar CGI ko aanshik rup se chintansheel darpan ke madhyam se project karke or vaastavik duniya ko sidhe dekhakar kiya ja saktaa he.is vidhi ko aksar optical si-thru kaha jaataa he.sijiai ke saath vaastavik duniya ke drishy ko milakar bhi electronic rup se ek camere se video sweekaar karke or ise electronic rup se sijiai ke saath milakar kiya ja saktaa he.</s>
<|assistant|>
CRT kaa arth cathod re tub he.alsidi liquid-crystal disple he, elsio silicon par liquid crystal ke liye khadaa he, or oelidi dwaara carbonic prakaash utsarjak diod kaa pratinidhitiv kiya jaataa he.CGI kaa arth computer-janit imageri he or AR sanvardhit vaastaviktaa kaa pratinidhi he.emr mishrit vaastaviktaa he.</s>
