Powered two wheelers in a changing world—Challenges and opportunities Powered two wheelers (PTWs) come in diverse forms and are used for a range of purposes in very different parts of the world. In many parts of the world, th... N.,Haworth - 《Accident Analysis & Prevention》 被引量:...
Signs, the lexical items of signed languages, can be articulatorily characterized as one or two-handed (Klima and Bellugi, 1979). It has been observed in the signed language literature that some one-handed signs can undergo doubling of manual articulator to express meaning intensification (Johnston...