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有个专门的决议说这个问题:
' m W, z) X! O3 ]6 W" L* c4 BCOLLECTION OF OSM/HA DECISIONS4 M( |# z$ B: Q
Standard:3 ~: o, B, r* ]4 _
EN 60335-1/1988
* m8 P/ b4 I- V) ?# `1 v! ZSub clause: 2.2.10 Sheet n. OSM/HA 01. |1 j4 A1 ~1 T9 ?0 y
Page 1(1)
: C% J' f1 n6 z6 h3 ~0 ~Subject: Definitions Key words:0 s% }: J" p! ~# O4 _
-special purpose tools Decision taken at the
& s- H0 i8 |, S8th meeting 1994
$ ` k4 q ?' Y3 s* [9 VQuestion: What is a special purpose tool?
7 J7 Y, |" W# T4 RDecision: The examples of screws shown in the figure are considered as having a head
, x' k' [; D/ {) o) {for which a special purpose tool is needed.' n: S1 P0 S: O/ V- ~- F
Explanatory notes:! q6 m1 S; A" m+ O
5 I: x4 U) v, q+ I8 Y) ^) p- o, x3 w( g* m- V3 E' T
: d2 Z/ R: |# ^& k
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