wang zhang liu liao jia (2 risultati)

Soft cover. Condizione: Good. 1st Edition. Text is chiefly in Chinese, with some English. Binding has wear; spine tips are chipped; top corner of cover near spine has a small written call number (duplicate), with no other library marks in the issue; tight, text clean. 128 p., well illustrated, printed on good quality glossy paper. Includes: note on pro-cathaysian flora -- pinna of pecopteris lativenosa -- eifelian rugose corals -- stromatolite reefs -- spore-pollen assemblage -- mixosaurid fossils -- conodont succession -- guangweicaris luo -- hyaena coprolites -- and synopsis of new book about trilobites of china. [b 731] Size: Oversize.

paperback. Condizione: New. Paperback. Pub Date: 2023-08 Pages: 271 Language: Chinese Publisher: Chemical Industry Press Based on the basic unit of 3D printing physical layered three-dimensional structure. this book divides 3D printing technology into four types: zero-dimensional light spot. zero-dimensional powder point. one-dimensional line and two-dimensional surface. On the basis of sorting out the development history of 3D printing technology and related policies. this book introduces in detail the physical model c.