Power supply=====> nguồn cung cấp năng lượng

LED ring====>Vòng phát quang

Microscope======> Kính hiển vi

Stand=======> chỗ đứng, vị trí..../ đứng, chịu đựng

Zoom lens====> ống kính phóng đại

BNC Cable=======> dây cáp BNC

Camera Adapter======>Ống kính tiếp hợp

Catalogue========>bảng mục lục/ danh mục liệt kê

Poster=======> Áp phích quảng cáo/ bức tranh in lớn

Power strip========> "strip": đường băng (use in aeronautic field) "Power trip": maybe it's mean that: a long road for plane to run to get the highest speed before take off.

PC=====> Personal Computer: Máy tính cá nhân

Cart=====> Xe bò/ xe ngựa ( a kind of transport, use animal to move)

Power supply: bộ nguồn (for PCs), nguồn điện (for electric machines), nguồn năng lượng (for others)

Fiber (optic) Light Guide: cáp dẫn quang.

LED ring: vòng LED.

Microscope: Kính hiển vi

CCD Camera: Camera CCD (haha, quite simple).

Focus Mount: Did you mean this "the Focus Mount ensures precise focusing and the non-rotating lens mount means that all operating elements and scales of the shutter remain in the same position." If so, it is "bộ giữ tiêu cự".

Stand: You did mean a divide that hold the camera firmly to its position, right? Like a tripod? You did not mean"stand" in "Don't move! Stand there!", right? If so, it is "giá đỡ".

Zoom lens: ống kính phóng đại

BNC Cable: dây cáp BNC

Camera Adapter: Which one did you mean: an AC to DC equipment or a divide that to help to mount a small lens to a larger one? The former is "bộ sạc", the latter is "ống kính tiếp hợp".

Telecentric Lens: ống kính tele

Power strip: ổ cắm điện. My god, it's got nothing to do which the airport's runway.tu pham must have a great sense of humor ^_^

PC: Vietnamese often refer is as "máy tính để bàn - desktop PC" in distinguish from laptop or notebook which means "máy tính xách tay".

Cart: What? What did you mean? No correlation at all if you want to refer to a kind of ancient transportation vehicle.