立式加工中心（vertical machining center）共有三个坐标轴，其控制主要由PLC完成。
立式加工中心（vertical machining center）共有三个坐标轴，其控制主要由PLC完成。
相关考题：
Of the following, the most important consideration for a tank vessel is ______.A.GMB.the vertical center of gravityC.the longitudinal center of gravityD.the stress on the hull
The righting moment can be determined by multiplying the displacement by the ______．A.vertical center of gravity（KG）B.longitudinal center of gravity（LCG）C.righting arm（GZ）D.center of gravity（CG）
With no environmental forces acting on the vessel，the center of gravity of an inclined vessel is vertically aligned with the ______．A.longitudinal centerlineB.center of flotationC.original vertical centerlineD.metacenter
Aboard a vessel, dividing the sum of the vertical moments by total weight yields the vessel’s_____.A.height of the center of gravityB.vertical momentsC.righting momentsD.inclining moments
At all angles of inclination, the metacenter is ______.A.vertically above the center of buoyancyB.vertically above the center of gravityC.at the intersection of the upright vertical centerline and the line of action of the buoyant forceD.at the geometric center of the underwater volume
单选题The center of flotation of a vessel is（）.Athe center of volume of the immersed portion of the vesselBthe center of gravity of the water planeCthat point at which all the vertical downward forces of weight are considered to be concentratedDthat point at which all the vertical upward forces of buoyancy are considered to be concentrated
单选题Of the following，the most important consideration for a tanker is（）.AGMBthe vertical center of gravityCthe longitudinal center of gravityDthe stress on the hull
单选题The center of buoyancy is located at the（）.Ageometric center of the waterplane areaBintersection of the vertical centerline and line of action of the buoyant forceCcenter of gravity of the vessel corrected for free surface effectsDgeometric center of the displaced volume
单选题At all angles of inclination, the metacenter is（）.Avertically above the center of buoyancyBvertically above the center of gravityCat the intersection of the upright vertical centerline and the line of action of the buoyant forceDat the geometric center of the underwater volume
单选题Molded depth is measured from the（）.Ainside of the shellBoutside of the shellCtop of the center vertical keelDtop of the garboard stake
单选题0f the following, the most important consideration for a tank vessel is（）.AGMBthe vertical center of gravityCthe longitudinal center of gravityDthe stress on the hull