vibration exciter -종종 shaker라고 부른다)를 사용한다. 가진기의 종류는 기계식(mechanical), 전자식(electro- dynamic), 그리고 유압식(electro-hydraulic) 등이 있다. Sine signal 및 stepped sine signal, random signal 등의 진동 환경을 제공할 수 있다. 각 종류에 따른 특성, 장단점은 다음과 같다.
1) The Electromagnetic Vibration Exciter
1.1.3. Prevent Vibration in Ships
선박에서의 주요 진동 문제는 main engine 및 프로펠러에 의해 발생된다. 프로펠러에 의한 exciting force는 surface force나 bearing force, thrust force를 발생시키며, 발생된 force들은 hull girder 진동을 일으킨다.
다른 종류의 진동으로는 wave force로 인한 whipping 및 springing이 있으며, 다음 장
vibrations. Softly brush up and down your teeth, not across your teeth. The strokes should be vertical or circular, not horizontal.
6. Toothbrushing Mistake No. 6: Starting in the Same Place Each Time
Many people start brushing the same part of their mouth over and over, dentists find.
Start in a different place so that you don't get lazy in the same area of your mouth.
7. Toothbrush
General Process of 3D printing
FDM - Fused Deposition Molding
FDM works on an "additive" principle by laying down material in layers.
The model is produced by extruding small beads of thermoplastic material to form layers as the material hardens immediately after extrusion from the nozzle.
The nozzle can be moved in both horizontal and vertical directions by a numerically controlled mechanism
vertical position of the nozzle is raised at least 0.1mm (0.004 inch), which is equal to the thickness of good quality paper, or the supporting table is lowered an equivalent amount, and the process is repeated. In order to build an object the controlling drawing for each layer changes very slightly.
Typical standard manufacturing methods are subtractive, that is material is removed from a base
vibrates through the cabin.
The boys eyes snap open.
Jacob glances around nervously. He looks like an escaped
convict who just accidentally walked into the Policemens
Ball. A GREYHAIRED MAN two seats away from him gives the
teenager a cursory glance, then goes back to his book. Jacob
lays his head back and tries to relax. The engines continue
to drone.
Until a new noise starts. A WHOOSHING N
Lighting
of the Tree! How bout that!
The merry Consumers stop to watch the Ice Princess scurry *
to an IMMENSE VIBRANTLY MULTI-COLORED BUTTON and press it
down. This causes a mammoth Christmas Tree to light up.
The crowd erupts in aahs and oohs. *
10 INT. A VERTICAL SEWER GRATE--EVENING 10
Through a grand, vertical half-circle sewer grate, an
older pair of strange eyes peer. Taking the point
vertical trajectory
if you have to.
A Le Rhne rotary
wont stall at degrees.
Were still short two cameras.
We need to cut that sequence down...
Were not cutting. Ill get those cameras.
Set up for rehearsals.
Im Noah Dietrich.
Your office said Id find you here.
Dietrich.
Youre a man on the come.
I read your rsum, talked to your references.
Know what Im looking for?
Youre looking for a second-in-com
VIBRATE. The boat has started to move!
Whittlesley stands bolt upright, realizing whats going on.
WHITTLESLEY
No!
Too late. He turns to run back on deck but then stops, sniffs the air.
A look of desperation fills his eyes. With one hand he pulls out THE
KNIFE, and unexpectedly puts it to HIS OWN NECK. Better to kill
himself than face what comes next. The knife touches...
A NECKLACE of TWO ARROWS
vertical frames(10) having both ends laid under a footway corresponding to both lines of a pedestrian crossing and having a hollow pipe, a plurality of horizontal frame(20) separated from the vertical frames in prescribed intervals and connected to the vertical frames in a horizontal direction, a motor(30) mounted at an inner opposite position of the vertical frame and having a driving gear(31),