A friend of a friend in china helped him win $ 1 million of orders from a new computer-chip maker for u. s. - made chemical tubing , an item so specialized that mr. yu wasn 't entirely sure what he was promising to deliver .

在中国的一个朋友的朋友帮他从一家新的电脑芯片生产商那里拿到了100万美元的美国产化学管道定单，这个东西专业性太强了，俞东雷都不完全确定自己能否发货。

Then I built a model using this pattern from pvc tubing .

然后我用pvc管材按照这个布局模式制作了一个模型。

Insert fitting into tubing , then position crimp ring squarely over barbs .

将管件插入管道，然后将压紧环垂直定位在倒钩上。

Most are constructed of glass tubing and fiberboard composite shelves .

大多是建玻璃纤维板复合管和货架。

The price of plate steel rose 22 % in major steel-producing countries and the price for pipe and tubing rose 14 % in the second half .

去年下半年，主要产钢国厚钢板价格上涨了22%，各类管材的价格上涨了14%。