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有个专门的决议说这个问题:
+ u( U! Z2 ?5 {; t" m0 Y. NCOLLECTION OF OSM/HA DECISIONS
6 ^3 F9 r8 b6 CStandard:
0 Q' }, D$ x7 @ ?" F9 KEN 60335-1/19887 b% \& G# a7 g- _( _
Sub clause: 2.2.10 Sheet n. OSM/HA 01& d" G$ u) v6 C
Page 1(1)
/ ^" ^' a, ^" U$ Z3 B$ j: q1 }Subject: Definitions Key words:
1 @* {3 _" ^- R- `3 E-special purpose tools Decision taken at the
" z2 K$ d9 u8 Z1 v" O( L% _2 i8th meeting 1994$ R. D/ W4 j U8 O
Question: What is a special purpose tool?
; L) B0 F! B3 y* E' K1 CDecision: The examples of screws shown in the figure are considered as having a head- r# F5 K8 D6 W
for which a special purpose tool is needed.3 U6 ^ Z' t5 B q$ K& d) ^
Explanatory notes:3 [) \- C# o7 o0 C! J: e
! B& E3 }- g/ b/ e: `
, P6 S$ [' V- D2 L% `0 }
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