机读格式显示(MARC)
- 000 00930cam 2200301 a 4500
- 008 730607s1973 ohua 001 0 eng
- 099 __ |a CAL 021999672935
- 100 1_ |a Johnson, James Ephraim, |d 1922-
- 245 10 |a Electrohydraulic servo systems / |c [by] James E. Johnson.
- 260 __ |a [Cleveland] : |b Editors of Hydraulics & pneumatics magazine , |c 1977.
- 300 __ |a viii, 183 p. : |b ill. ; |c 23 cm.
- 650 _0 |a Hydraulic servomechanisms.
- 650 _0 |a Servomechanisms.
- 905 __ |a CAU |f TH137/JJE/(2) |b E0232505(or.)
- 907 __ |a CAU |f TH137/JJE/(2) |b E0232505(or.)
- 999 __ |t C |A zjyx |a 20071225 15:55:53 |I gxr |i 20100310 09:58:44 |G gxr |g 20100310 09:58:4