: Z8 U9 m: L1 O0 G
长度单位:
1 in = 25.4 mm # ]$ R& L! ]# Y! Y! D* E$ |
1 ft = 0.3048 m . u- P5 |9 X1 h: c, |* j
1 mile = 1609.3 m ( `9 G9 T, d* C- V8 _( T
1 micron = 10-6 m
质量单位:
1 lb = 453.3 g
1 cwt = 50.8 kg" s* R3 h6 `' O8 G. N
1 ten(imp) = 1016 kg0 u V" j" W: m9 W. _8 Y5 G- m$ C
1 ton(us) = 907.2 kg
1 tonne = 1000 kg
$ x0 p9 P! v8 e7 h
力矩单位:
1 inlb = 0.113 Nm
1 ft lb = 1.356 Nm) ^' ` E; w5 ?
1 kgm = 9.807 Nm
1 ft poundal = 0.0421 Nm
功及能量单位:
1 lbft = 1.356 J
1 Nm = 1 J - B: ^( w% m/ m6 s
1 kgm = 9.807 J
1 kW/hr = 3.6 MJ & `! g2 ?7 L2 _' i/ k1 q
面积单位:2 p ~7 z- `9 I7 ]
1 in2 = 6.45 cm2
1 ft2 = 0.093 m2
8 t' v8 @, b8 {. F+ L: J4 v" r
压力单位:
1 psi = 6.89 kPa
1 kgf/cm2 = 98.07 kPa( F2 }6 _1 G/ C9 W) a0 w7 ]7 t
1 bar = 100kPa
1 bar = 14.5 psi- I: [) g) _ |: ^- a
1 atmosphere = 98.1 kPa4 v, y4 K: _9 t( ]; c* u
1"(标准) = 101.33 kPa4 O) L3 ` R. _0 Q! f
1 厘米水压 = 97.89 pa
1 英寸水压 = 248.64 Pa9 }1 j$ H. [4 E
1 毫米汞柱 = 133.3 Pa
1 英寸汞柱 = 3.39 kPa3 h7 S @# z9 I
1 Torr = 133.3 Pa; Z0 E! h8 }* P' J
1 英尺水压 = 0.0298 bar
1 bar = 33.33 英尺水压 ! U6 {$ b- N2 @: h9 Q
, @* }: W* |6 A4 }4 j
温度单位:
(°F-32)×5/9 = ℃, O. Q5 Y+ b% `4 _# J% q
K - 273.48 = ℃
; I: s8 K2 J3 ~" _3 l/ G: Q" N
体积单位:
1 litre = 0.001 m3! j+ V* g+ B; M; y: O
1cu.ft. = 0.0283 m3
1 cu.in. = 16.39 cm36 {5 P% K2 E/ d
1 gal(imp) = 4.546 L
1 fluid oz.(imp) = 28.41 ml( v9 I( w6 g" \1 c
1 fluid oz.(us) = 29.57 ml
力单位:
1 lbf = 4.45 N
1 kgf = 9.81 N7 q" v: s* P) z+ @/ I& L* Z: g7 }
1 kp(kilopond) = 9.81 N" c! Y1 t# ]- l
1 poundal = 138.3 mN
1 ton force = 9.964 kN1 W8 z/ e' ~* i& b2 d" I2 K
, I/ V( G# ^; n
功率单位:" u# z+ Q6 U& C4 Y m6 D
1 lbft/sec = 1.356 W8 G; y4 F. i2 G+ _! K3 Z/ t
1 kgm/sec = 9.807 W4 |; d8 }% h' S/ s5 Y% s' P/ O
1 Nm/sec = 1 W
1 Joule/sec = 1 W
1 H.P.(imp) = 745.7 W
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