STP profile control hard-gel is made up of polyacrylamide, cross-linking agent and retardant.
STP强凝胶调剖剂由聚丙烯酰胺 、 交联剂 和延缓剂组成.
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这里有平坦的戈壁滩,有水道干涸了的高原, 还有连绵不断的山岭.
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Chinese officials hope that trade will pick up when the two countries switch to hard currency...
中方官员希望两国在转向使用硬通货后,贸易会有起色。
《柯林斯高阶英汉双解学习词典》
With only three legs, it was hard for Sooty to keep up with the old lady.
只有三条腿, 这是很难绍蒂跟上老太太了.
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