采用反吹法测定高纯氩气中大分子碳氢化合物,能够达到准确、快速测量高纯气体中大分子碳氢化合物的目的. Column switching - back flushing technique can realize accurate and fast measurement of macromolecular hydrocarbons in high - purity argon.
The diaphragm vibrates , thus setting the air around it in motion.膜片振动,这使得周围的空气也动荡起来.The diaphragm draws air into the lungs.横膈膜向下运动让空气进入肺部.A portion of the cardia is demonstrated above the diaphragm.膈上发现部分贲门....
As we travel south, the countryside begins to undulate as the rolling hills sweep down to the riverbanks.我们一路南行，乡间开始变得起伏不平，绵延的山峦一直延伸到河岸。The old lane that used to connect Elm Street to riverbanks was overgrown.从前连接榆树街和河岸的...
As soon as we were inside, the rain began to bucket down.我们刚进屋，大雨便倾盆而下。A moment or two later champagne in an ice-bucket materialized beside them.片刻之后，他们身边出现了一只装着香槟的冰桶。He felt a sudden compulsion to drop the bucket and ru...