常見例句雙語例句Crushed stone, manufactured lightweight stone, and seashells are often used in lieu of mural gravel.破碎的石頭、人工制造的輕質石頭和海貝，經常用來代替墻上的礫石。Second, the effect of the content of stone powders in the manufactured sand for pre-mixed mortar is analyzed.其次，研究了機制砂中石粉含量對預拌砂漿性能影響的變化規(guī)律。One of the most remarkable difference between manufactured sand and natural sand is stone dust whose particle size is less than 0.機制砂中含有石粉是機制砂與天然砂之間最顯著的區(qū)別之一，而石粉對機制砂混凝土性能影響也是機制砂混凝土研究的重點。 返回 manufactured stone