A molecule cannot have a three-fold axis and a four-fold axis in the same direction.
一个分子不能在同一方向上有一个三重轴和一个四重轴。
The Teaching Experimental Research on Emphasize Key Techniques Combination of four Rotation Axis of Discus Throw;
突出铁饼四个旋转轴的技术重点组合教学实验研究
Total Weight (Less Bearing)
总重量(较少轴承)
Four point contract center-oriented thrust Ball bearing
四点接触向心推力轴承
teflon coaxial cable
聚四氟乙烯同轴电缆
Spokes radiate from a wheel huB.
轮条从轮轴向四周伸出
vertical 4 position electric turret
轴式四工位电动转塔
The top end bracket shall be fitted with a lifting bail and shall be capable of supporting four (4) times the combined weight of the pump and motor.
顶部尾轴承架应该配置吊环，应该能够支撑泵和电机的总重量四（4）倍的压力。
The important thing to know that it has an axis of symmetry - the optical axis.
重点是知道主镜有一个对称轴——光轴。
Structure of axle box for heavy-duty 8-axle diesel locomotive
重载单节八轴内燃机车轴箱结构型式
Rolling bearings--Four row tapered roller bearings--Boundary dimensions
GB/T300-1995滚动轴承四列圆锥滚子轴承外形尺寸
On Stiffness of Rigid Mainshafi on Vertical Combination Four-spindle Boring Mill;
立式组合四轴镗床刚性主轴刚度的探讨
If the bearings show significant wear
如果轴承出现严重磨损
hoist pump drive shaft bushing
起重机油泵传动轴衬套
light truck with long wheel base
长轴距轻型载重汽车
axially symmetric marine gravimeter
轴对称式海洋重力仪
Accurate main shaft structure for heavy cutting, the main shaft is installed on a integrated main shaft head, with excellent rigidity for heavy cutting.
重切削精密主轴结构。主轴安装在一体成型主轴头，重切削刚性佳。
To saw(a log)into quarters lengthwise along its axis.
四分周锯开将（一圆木）沿中轴线纵向锯成四部分