nih4dThe existing 3D printing methods exhibit certain fabrication-dependent limitations for printing curved constructs that are relevant for many tissues. Four-dimensional (4D) printing isPAKAI POLA KHUSUS NIH4D. TIPS 1. Lakukan Pola Dari Awal & Ulangi Jika Salah (Nyalakan Double Change Jika Ada) TIPS 2. Jika Sudah Mengalami Kekalahan Beruntun Istirahat 15