登录道客巴巴
高级 清除条件
时间不限
时间不限 一周内 一月内 半年内 一年内

自定义

自定义时间错误!
确认
页数 : 全部 1-5页 6-10页 11-20页 21页以上 - 确定

约有39,953,688篇,以下是第1-10篇

Carts - AT Agricultural Tools农用工具农机技术 2

“, 1. ATKINSON, D.A. 2. cooms, R.M. & PEBRSON, H.S. 3. PFUSON,H.S. 4. SZABEIAlJGH,T.J. Jr, PEUSON, H.S. & JIBRIL, HAL. I.D. The ohaxaotaristice of bearings when employed in slow running machinery. Univ. of Manchester Inst. Science & Technclogy @MIST) April, 1972. e The ITDG wood bearing ox cart. ITDG/GS Project, Megcye, Zembia February 1974. . . '. Personal oommnication. 1975 The wood beering - how to make it. special l&p. No. 69-6. Industrial Development Center6 Zario, Nigeria. December, 1969. ? . tLondoi...
上传时间:2018-11-05 页数:21 格式:PDF 浏览: 2

Carts - AT Agricultural Tools农用工具农机技术 1

A proiect of Volunteers in Asia ITDCl Agricultural Equipment and Tools No. 38 Published by: Intermediate Technology gublications, Ltd. 9 King Street London WCZE 8HN United Kingdom Paper copies are 0.50 British pounds. Available from: Intermediate Technology Publications, Ltd. !I King Street London WCZE 8IIN United Kingdcm Reproduced by permission of Intermediate Technology Publications, Ltd. Reproduction of this microfiche document in any form is subject to the same restrictions as those of the original dcc...
上传时间:2018-12-20 页数:21 格式:PDF 浏览: 3

Carts - AT Agricultural Tools农用工具农机技术 3

Use - To set out a level contour line, after checking the setting of the instrument, the St; Ef was placed next to the road tracer and the target sdj..sted to coincide with the cross wires. The staff was then moved to a point about 10 metres away and moved up or down the slope until the target again coincided with the cross wires when viewed through the tube. The road tracer was then swung slightly and allowed t;fc;;i to rest again so that the reading could be checked. reading was confirmed, the position wa...
上传时间:2018-11-10 页数:23 格式:PDF 浏览: 2

Cassava Grinder - AT Agricultural Tools农用工具农机技术 2

Cassava Grinder - AT Agricultural Tools农用工具农机技术 2
上传时间:2018-12-13 页数:17 格式:PDF 浏览: 2

Agricultural Technology for Developing Nations - AT Agricultural Tools农用工具农机技术 2

Agricultural Technology for Developing Nations - AT Agricultural Tools农用工具农机技术 2
上传时间:2018-11-13 页数:36 格式:PDF 浏览: 5

Old Farm Tools and Machinery - AT Agricultural Tools农用工具农机技术 2

Old Farm Tools and Machinery - AT Agricultural Tools农用工具农机技术 2
上传时间:2018-11-22 页数:63 格式:PDF 浏览: 1

Carts - AT Agricultural Tools农用工具农机技术教程英文教材电子书

Carts - AT Agricultural Tools农用工具农机技术教程英文教材电子书
上传时间:2015-03-16 页数:65 格式:PDF 浏览: 2

Cassava Grinder - AT Agricultural Tools农用工具农机技术 1

Cassava Grinder - AT Agricultural Tools农用工具农机技术 1
上传时间:2018-12-08 页数:17 格式:PDF 浏览: 2

Cassava Grinder - AT Agricultural Tools农用工具农机技术 3

Cassava Grinder - AT Agricultural Tools农用工具农机技术 3
上传时间:2018-11-14 页数:18 格式:PDF 浏览: 2

Foot-Powered Thresher - AT Agricultural Tools农用工具农机技术 2

Foot-Powered Thresher - AT Agricultural Tools农用工具农机技术 2
上传时间:2018-12-10 页数:21 格式:PDF 浏览: 0