There is also an unworthy thread of irritation at my son: couldn't he just concentrate for half an hour?
对我儿子来说，这也是一个不值得的刺激过程：他能够集中精神半个小时吗？
The thread length depends on the size of the book, get enough to sew about half the book.
线的长度取决于书的大小，一次留足订半本书的线。
This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.
本文介绍一种测量石油螺纹量规的螺旋线、中径、锥度和牙形半角的新方法及装置。
An injection mould with half-parting inlaying structure was developed based on the analysis on forming process of wiring terminal positioning fixture with nine-thread pedestal.
通过对九线基座、接线柱定位夹具注射模镶件的工艺分析，确定了成型镶件分半镶拼式结构。
Its diameter is 12mm, and is equipped with 1 false work hook and 1 standard thread half loop.
系绳粗12mm，配有1个脚手架挂钩和1个标准螺纹型半圆环。
Its diameter is 12mm, and is equipped with 1 false work hook and 1 standard thread half loop.
系绳粗12mm，配有1个脚手架挂钩和1个标准螺纹型半圆环。
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