Earlier reports suggested that a meeting would take place on Sunday.早先的报道暗示周日可能会召开会议。This article reports a method of preparation of metal - copper - powder with cuprammonia by directly chemical method.本文报导了一种用化学方法直接从铜氨溶...
These regressions must be suited to the curvilinear character of the relationships.这些回归方程必须符合相关曲线特征.Moreover, a gear pair with curvilinear - tooth traces operates without axial thrust force.除此之外, 具有曲线型齿线之齿轮在运转时亦不会产生轴向的推力...
摩擦力随预加张力的增加而增加.Friction increases with increasing pretension.法向力的起源与绳子上的张力的起源相似.The origin of the normal force is similar to the origin of tension in a string.由带特殊张力的桥环双键可以得到规整的乙烯类加成聚合物.Regular vinyl addition polymers ma...