对,房客不能把衣服挂在阳台上.Yes. Tenants aren't permitted to hang laundry on the balcony.你对房客的选择并不十分计较, 我们讽刺地说.You weren's very particular about the roomers you took, we said, sarcastically....
The main difficulty was failure of refractories at high temperature.其主要的困难是高温下耐火材料的损坏.The Preparation method of cheap aluminium dihydric phosphate and its application in refractories have been intro - duced.提供了廉价磷酸二氢铝的制备...