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- variable screw diameter 变螺径
- Withdrawl intensity is increased with screw diameter and length. 椎弓根螺钉的稳定性在骨质疏松时明显降低，对于骨质疏松患者，单纯增加螺钉直径较为困难，一般需进一步强化椎弓根螺钉的稳定性，聚甲基丙烯酸甲酯骨水泥强化骨质疏松椎弓根螺钉能显著增加螺钉的稳定性和抗屈强度，但由于骨水泥聚合产生高热可导致组织损伤，体内长期留置会产生毒性和致癌作用，具有良好生物相容性的新型添加材料，如羟基磷灰石骨水泥、磷酸钙骨水泥等将逐渐替代聚甲基丙烯酸甲酯骨水泥。
- Selecting a screw diameter bigger than the shot weight need would help. 选用较注塑量所需更大的螺杆直径会有帮助。
- The extrudate shape,dimension and output can be effectively controlled on single roller extruder with its variable screw and roller speeds and the flexible combination of preform die and final die. 单辊筒口型挤出机通过变更挤出机螺杆和辊筒转速及灵活的预成型口型和终端口型设计组合可以有效控制挤出物的形状、尺寸和生产率。
- Screw loosening and dislocation is caused by screw extraction force, and the screw withdrawl force is related to screw diameter, screw thread design, bone density, and operation skills. 拔出强度随外径的增加而增加，螺钉越长，拔出强度越大。
- I can't get this screw to come out of the wall. 我无法把这颗螺丝钉从墙上取出。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- A constant, variable, function name, or expression. 一种常数、变量、函数名或表达式。
- The brackets want an extra screw. 托架需要再加一个螺钉。
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- The prices are variable, shop around by all means. 价格高低不一，所以一定要货比三家逐店选购。
- The temperature was a variable in the experiment. 在该实验中温度是个变量。
- The taste of the lemon made her screw up her face. 柠檬把她酸得龇牙咧嘴。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- Measure the diameter of this circle. 量一下这圆的直径。
- Does this lid screw on, or does one press it down? 这个盖子是拧的还是按的?
- A finite increment in a variable. 变量增量变量的有限增量
- We must gauge the diameter of wire first. 我们必须先测量电线的直径。
- Turn the screw to the right to tighten it. 将螺钉向右旋紧。
- The speed of the toy boat is variable. 玩具船的速度是可变的。
