定价： 167元 / 折扣价： 149 元 加购物车

定价： 1415元 / 折扣价： 1260 元 加购物车

定价： 1665元 / 折扣价： 1482 元 加购物车

定价： 0元 / 折扣价： 0 元 加购物车

定价： 0元 加购物车

No other standards presently exist for the survey of water body morphologic characteristics. The techniques described in the references represent the present state-of-art and contain sufficient information to inform geologists and engineers of the kinds of information to be gathered and the techniques to be used.The major categories of methodologies described in the references are: sounding, positioning, land surveys, sediment properties, sediment sampling techniques, photogrammetric methods, calculating volume and area, morphologic base data, weighted sediment dry weight, reservoir operations, equipment, and reporting results.The references are intended as operational manuals and do not describe experimental design.1.1 This guide covers the methods used for defining the morphologic characteristics of surface water bodies. This guide references manuals that provide various rationale and procedures necessary to conduct a morphologic survey.1.2 The references were written for specific agency use and may not be applicable in all cases (1-6)².1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

定价： 0元

本标准规定了汽车二级维护质量评定内容、评定技术要求、评定规则及采用的评定检测方法 本标准适用于GB/T 3730.1-2001规定的在道路上行驶的总质量26t以下（含26t）的汽车和总质量45t以下（含45t )的汽车列车

定价： 0元 / 折扣价： 0 元