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


 !
"#$
%&'()*
!+!, &'()*
/(0!-1
 2-3
4/(5!
46789:;<=
>6789:?7@
A9:#BC#D
E6789:$F"?7@;<=
GH##9@CIJ
K$LM-N3OP/
6KL%&QR

 @5--SO!QTUVTUWRVQXY&X5-)PZ[\0])1)MX^)(&V(__`!
'Q'a&!bQX)PcV&3R'!bQX[V)PcV[d-V).)!*e_]']&!R
5R&3fT-0g&3R!b_V!&RV&W-Z!VR!b_'Q5R
&3f_5&&3!1/[h &Mi5eM)MX^
 5X5-&PceXY&%!`&3]'Qei`!PZjV)15`d*X%&)(&)5
-'a&!bki!l5X+'a&!b)PZ&5mV__`!)*V^%&V_nX
@Y&[`X5-e`&3]3)1&5)Y3+!'a&!b!b,+&3]^'j!gjVc'Qg
(_0oW35!(&V.

@5-QX5-0p)1)MX%&*)(&R&3f
 !
qd5T`_
qd5&^_


qr
-QTUd5&^_
Ud5T`_
Ur
"#$
%&'()*
 `!&PZ!.sLU3
  X'!!.sL(&  2 &)Yb&`&W-g&3.TU3
 @]t.L!1'QuX'v 2(& 'Q &)Y)1_]']'!bw)5
Pm)1&r)exX_P/5[vvb&`&W-g_pZ_(&
!+!, &'()*
 b&`&3-*)Y&W-gQ-)PZ&!l&il3(&!b) !'j!b&`)!*i!1'Q
i!1X[5&)!b&\&QdY
 q-)!*i!15sy&3.d!UQ !0pz!b)!bsiR_+!&W-g
q6\0]d/X_![&X h'j!0q[U[!'Q]X''U__`!)!b&{b5/
( &)Y'Q5!
 qb&`5!il&Z_&W-g'Q)!b&\
q/(0!-1[\0]bd/XqX&3&-)|!PPZVX i}'j!!*l)Y&+!
Q!)%&[~'Q&g)Y&-)|!
q5&R[`QX'!bWb&`)*)PZ!b&•3€3Q&3.d+)!*i!1u&3.
d!Ub&`e5&!l&d)•d5‚!)!b&\3(&0ƒ0QxX!1'Q&3-T(&i!M
[\vV&-&l
/(0!-1
6\0]d/XX i}(_0M&3gtl_X&30!-1d5&^_'QX&30!-1
d5`_„e&1•MXY&X&30!-1d5`_)PZuX&3gtl_'QMTU…
 2-3
 2-3W&3`Q0mô tơ gây rung (11)QX,-)†&c!trục lệch tâm
(3)'Qcon nặng lệch tâm (16).g,-)e& 3g-&X-3g3
R,,5&3f0!-1d5TUtl_T‡'j!X%&)Pc'Q&3-*&+!&3OT`*)(&V
&3,5&3f)MXg)MXiR)|!

- Ưu điểm:
ˆ5j_)(&0ƒ0Q)PZ0}il&'j!
ˆ(&PZ)MX
ˆ!*+Phj['j!d5&^_'Qd5`_
qPZ)!1X
$d*X%&e'(.0!-1X5-ieiyC!0!-1[R&3fi5_+!0pTU
&+!V3X)10!-1
ˆj_)(&&3.p‡&PjX i!&3c!XPQXaX,5&3f)MX)(&VQX_P/tb
i50!-1ieiy/
ˆC!Md*X%&_n'Q~&f_+![\0] !)MXi5
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