COUPLING FOR CONDUIT EMT PIPE,WITH UL-LISTED.什么一意思

专业英语翻译
Employing dual-supply amplifiers and AC-coupling will usu-ally yield the best results, while DC-coupling and/or single-supply amplifiers impose additional design constraints due to their headroom requirements, especially when selecting the 3Vp-p input range.

External and internal coupling effects of rotor’s bending的中文翻议
External and internal coupling effects of rotor’s bending
and torsional vibrations under unbalances

英语翻译
Couplings
A coupling is a mechanicl device for uniting or connecting parts of a mechanical system.This lesson concerns itself with those couplings which are used on machine shafts for the purpose of transmitting torque,Couplings may be employed for a permanent or semi-permanent connection between shafts,or for disconnection of machine components to permit one member to run while the other is stationary.
Commercial shafts are limited in length by manufacturing and shipping requirements so that it is necessary to join sections of long transmission shafts with couplings.Couplings are also required to connect the shaft of a driving machine to a separately built driven unit.Permanent couplings are referred to simply as couplings,while those which may be readily engaged to transmit power,or disengaged when desired,usually are called clutches.
Rigid couplings are permanent couplings which by virtue of their construction have essentially no degree of angular,axial,or rotational flexibility,they must be used with conllinear shafts.
The flange coupling shown in Figure 2-3 is perhaps the most common coupling.It has the advantage of simplicity and low cost,but the connected shafts must be accurately aligned to avoid severe bending stress and excessive wear in the bearings.The length of the hub is determined by the length of the key required,and the hub diameter is approximately twice the bore.The thickness of the flange is determined by the permissible bearing pressure on the bolts.Although usually not critical,the shearing stress on the cylindrical area where the flange joins the hub should be checked.
A collar coupling,shown in Figure 2-4,consists of a cylindrical collar pressed over the ends of the two collinear shafts being connected,approximately one-half of the collar connecting each shaft.Usually one or more radial pins completely through each shaft and the collar,or setscrews,may be used to ensure that there is no undesired radial moment.A variation of the collar coupling results if a cylindrical part of one shaft fits concentrically into female bored portion in the second shaft and pins,setscrews,or other suitable fasteners are used.
Upon occasion it is desired that couplings be able to accommodate reasonable amounts of axial angularity between shafts,a small amount of eccentricity between parallel shafts,or axial moment of shafts during use.Flexible couplings may be employed for any or all of these cases.In addition,torsionally flexible couplings may be employed to adsorb some of the torque in the shaft,or to permit large amounts of torsionally flexibility as in fluid couplings or torque converters.

英语翻译
Viscous Coupling
Th­e viscouscoupling is often found in all-wheel-drive vehicles.It is commonly used tolink the back wheels to the front wheels so that when one set of wheels startsto slip,torque will be transferred to the other set.
The viscous coupling has two sets of plates inside a sealedhousing that is filled with a thick fluid,as shown in below.One set of platesis connected to each output shaft.Under normal conditions,both sets of platesand the viscous fluid spin at the same speed.When one set of wheels tries tospin faster,perhaps because it is slipping,the set of plates corresponding tothose wheels spins faster than the other.The viscous fluid,stuck between theplates,tries to catch up with the faster disks,dragging the slower disksalong.This transfers more torque to the slower moving wheels -- the wheelsthat are not slipping.
When a car is turning,the difference in speed between thewheels is not as large as when one wheel is slipping.The faster the plates arespinning relative to each other,the more torque the viscous couplingtransfers.The coupling does not interfere with turns because the amount oftorque transferred during a turn is so small.However,this also highlights adisadvantage of the viscous coupling:No torque transfer will occur until awheel actually starts slipping.
A simple experiment with an egg will help explain thebehavior of the viscous coupling.If you set an egg on the kitchen table,theshell and the yolk are both stationary.If you suddenly spin the egg,the shellwill be moving at a faster speed than the yolk for a second,but the yolk willquickly catch up.To prove that the yolk is spinning,once you have the eggspinning quickly stop it and then let go -- the egg will start to spin again(unless it is hard boiled).In this experiment,we used the friction betweenthe shell and the yolk to apply force to the yolk,speeding it up.When westopped the shell,that friction -- between the still-moving yolk and the shell-- applied force to the shell,causing it to speed up.In a viscous coupling,the force is applied between the fluid and the sets of plates in the same wayas between the yolk and the shell.

英语翻译
a tube（管） coupling（管接头） as claimed in claim 1 ,wherein the stem has means to seal in a tube located on the stem.

英剧coupling里的steve是什么口音
英剧coupling里的steve（Jack Davenport）是什么口音?好听cry了

模具上的英语
sprue bushing
spreader
ejector coupling
centering ring
cavity block ejector side
cavity block fixed side
slide carrier
slide nose
slide wear plate
slide guide rails
slide locks
cores in slide
cores ejector side
cores fixed side
ejector / pins
CAM
electrodes
mounting plate
mold base ejector side
mold base fixed side
support pillor
ejector plates
spacer rails
spacer plate

英语翻译
ELBOW 90 BANDED EQUAL
ELBOW 45 BANDED EQUAL
COUPLING PLAIN
TEE BANDED EQUAL
CAPS
COUPLING BANDED EQUAL
PLUGS
UNION BRASS SEAT
RED.BUSHING

HALF COUPLING 1/2" 3000# NPT 中的3000#是什么意思?
这是单承口管箍的英文规格,为美标,请问其中的3000#是什么意思?

请高手指点：机械上的名词,MALE STUD COUPLING是什么东西?
请高手指点：机械上的名词，MALE STUD COUPLING progressive ring是什么东西？