“张力的”的英语？

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...