The drying shrinkage and self - shrinkage of concretes with different water to binder ratios were studied.实验研究了不同水胶比的混凝土干缩性能及自收缩性能.Alumina ceramic was formed after gelling and solidify using boehmite as a binder.探讨了利用拟薄水...
the custodian of a museum博物馆的看管人Augustine Hancock served as an elementary-school custodian for 20 years.奥古斯丁·汉考克当小学看管人20年了。He served as an elementary-school custodian for 20 years.他当小学管理员20年了。...the custodian of the holy...
正电子发射断层成像 ( PET ) 是一种结合单一分子放射示踪的成像技术.Positron emission tomography ( PET ) is an imaging technique that combines a radioactive tracer with a molecule....
She fidgeted in her chair as she took a deep, tremulous breath.她在椅子上坐立不安，轻颤着深吸了一口气。We waited in tremulous anticipation.我们怀着紧张的心情期待着.Jastrow said, with tremulous facetiousness.杰斯特罗说着, 显出抖抖嗦嗦的滑稽样子.I opened the important le...