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汉语拼音：luó dīng

1.圆柱形或圆锥形金属杆上带螺纹的零件。按用途可分为连接螺钉﹑固定螺钉等。也叫螺丝钉或螺丝。

1. 圆柱形或圆锥形金属杆上带螺纹的零件。按用途可分为连接螺钉、固定螺钉等。也叫螺丝钉或螺丝。

• the top of the plastic hat is provided with a ball-shaped concave position, where a press plate and a forcing screw are installed in.

  塑制帽的顶部塑有球形凹进处、并可安装压板和压紧螺钉。

• At present, screwdriver and screw tap are hardware which is often used in machining factory.

  目前，在机械加工工厂里，螺钉旋具和丝锥是较为常用的两种五金工具。

• At present, the screwdriver, the wrench, the ruler and the die are hardware which is often used in machining factory.

  目前，在机械加工工厂里，螺钉旋具、扳手、尺子和板牙是较为常用的几种五金工具。

• To resolve the problem of the point and direction of the fixation of Axis lateral arch screw, using navigator finds the safe trajectory.

  针对枢椎侧方椎弓螺钉固定时确定进针点和进针方向困难的问题，通过导航仪寻找安全钉道。

• The vent valve comprises an air vent screw, a spring and a valve ball which leans against the channel under the acting force of the spring.

  所述排气阀包括一排气螺钉、一弹簧、一钢球，阀球在弹簧作用力下抵靠通道上。

• The pack of this item is 12per inner carton and 72 per shipping case; please do not forget that this item must be with Black screws.

  此类物品共装成72大箱，每箱内装有12个纸箱，请不要忘记把黑色螺钉与物品装在一起。

• He takes a moment to rub a finger across it a few more times.

  他花了点时间，用手指在螺钉上再磨蹭了几次。

• He said he watched it through his rifle's telescopic lens and described it as very large and without seams, nuts or bolts.

  他表示他从来复枪的伸缩镜中看到它，并将其描述成一种非常大，没有接缝、螺帽和螺钉的东西。

• "The bottom line is, the main security is two screws and a plastic cover, " he said.

  “底线是，主要是安全的两个螺钉和一个塑胶袋，”他说。