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| jgg
2011 31 (1):
152-155
ISSN: 0412-1961 CN: 21-1139/TG
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| RESEARCH ON SPECIFICATIONS OF PRECISE INVAR STAFF |
| Yang Junzhi 1) ; and Wen Dianzhong 2) |
| 1)Chinese Academy of Surveying and Mapping，Beijing 1000392)Beijing Shizhengxing Surveying Engineering Technology Co., Ltd.,Beijing 100035 |
| Received: 1900-01-01 Revised: 1900-01-01 Online: null |
Supporting info
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