發送短信 : Shrinkage Cracking Potential of Lightweight Aggregate Concrete

 _    _      ___      _____      ___      _  __  
| |  | ||   / _ \\   /  ___||   / _ \\   | |/ // 
| |/\| ||  | / \ || | // __    / //\ \\  | ' //  
|  /\  ||  | \_/ || | \\_\ || |  ___  || | . \\  
|_// \_||   \___//   \____//  |_||  |_|| |_|\_\\ 
`-`   `-`   `---`     `---`   `-`   `-`  `-` --`