Because great changes axial cross section, stainless steel tube joint is difficult to process.
不锈钢管接头截面积变化大, 成形和脱模困难.
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Sometimes he had amused himself by putting difficult questions to me.
有时,他为了自得其乐,故意提些冷僻的问题刁难我.
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It was difficult not to feel bitter about the events of the preceding year.
在她屈膝去拣明信片时,她感到手脚有些不听使唤了.
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The website clears away technical terms which are difficult to understand.
这个网站去除了那些难以理解的专业术语.
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O _ 2~ ( ·-) is relative difficult to be studied because of its short life.
因O_2~ ( · - ) 寿命极短,对其研究相对困难.
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型钢辊式矫直压弯挠度的计算一直难于得出适用工程的解.
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