The utility model discloses a control box used for a temperature control valve test of a civil aircraft, and relates to the technical field of civil aircraft repairing. A negative pole of an AC power supply is connected with an end of a time relay KT, an end of an angle meter JD, and...
Rheumatic fever and rheumatic heart disease: report of a WHO expert consultation, Geneva, 20 October - 1 November 2001 WHO Study Group on Rheumatic Fever and Rheumatic Heart Disease,WH Organization - 《Geneva World Health Organization》 被引量: 1794发表: 2004年 ...