求翻译：按我们的理解，它也叫运输标志，通常是由一个简单的几何图形和一些字母、数字及简单的文字组成，其作用在于使货物在装卸、运输、保管过程中容易被有关人员识别，以防错发错运。是什么意思？

According to our understanding, it is also called transportation signs, usually by a simple geometry and some of the letters, numbers and simple words, whose role is to make goods in the handling, transportation, storage process easy to identify the person to proofing the wrong operation.

As we understand it, and it is also called transport, which is usually marked by a simple geometric shapes and a number of letters, numbers and in simple language, and its role in the loading or unloading goods lies in that process, storage and transportation can easily be relevant personnel to iden

According to ours understanding, it also calls to transport the sign, usually is by a simple geometric figure and some letters, the numeral and the simple writing is composed, its function lies in enable the cargo in loading and unloading, the transportation, the storage process to concern the perso

According to our understanding, it is also called transport signs, usually by a simple geometry and a number of letters, numbers, and simple text composition, its role is to make loading and unloading of goods, transported and stored easily recognized by the officers concerned in the process, to pre

According to our understanding, it calls transporting the marking too, is usually made up by a simple geometric figure and some letters, figures and simple characters, its function lies in making the goods easy to be discerned by the relevant personnel in the course of loading and unloading, transpo