free on board train,free on rail是什么意思

用法例句

Analysis of Closed Injury of Abdomen 63 Cases Caused by Train;

火车致闭合性腹外伤63例分析

Numerical simulation on the metal flow pattern of hot forming process for the railway wheel;

火车车轮热成形金属流动规律数值模拟

The dish process of railway wheel is analyzed with help of finite element analysis commercial software MSC.

Superform,针对马钢火车车轮新压轧生产工艺中压弯工序,进行轴对称的弹塑性有限元热力耦合数值模拟。

This paper introduces several representative railway wheel UT systems developed in the recent years, and analyses their characteristics and disadvantages.

介绍了近年来国际国内火车车轮超声探伤的进展情况 ,分别分析了它们的优点与不足 ,并提出了车轮超声探伤方法和装置的设计原则及今后的发展方向。

The Sensor Design of Automatic Test Online With Move System of Railway Wheel;

随动式火车轮自动在线检测系统的传感器设计

Objective: To analysis the effect of disinfecting classroom and train carriages with perglutaric acid and determine the frequency and available dose of this disinfectant in disinfecting public rooms.

目的:通过使用低浓度的过氧戊二酸对教室和火车车厢的空气消毒和效果评价,探讨过氧戊二酸对公共场所空气消毒适用性及消毒作用持续时间。