海量图书期刊资源，随时随地畅享阅读乐趣
Determination of humic acid by chemiluminescenceD.F. Marino; J.D. Ingle Jr. · 1981
A srial ASCII keyboard—printerD.F. Marino; J.D. Ingle Jr. · 1982
Simple and inexpensive microcomputer-controllable stepping motor and drive circuitD.F. Marino; J.D. Ingle Jr. · 1982