insincerity 发表于 2025-3-25 04:50:47
http://reply.papertrans.cn/87/8628/862714/862714_21.pngCougar 发表于 2025-3-25 09:57:27
Ursula van Rienen,Ulf Zimmermann,Hendrikje Raben,Peer W. Kämmererlson (1959), economists have assumed that any innovation created by one firm provides usable information to other firms at little or no cost, so according to an unpatented innovation the status of a public good. In other terms, the intra-industry technological knowledge transfer requires negligible关心 发表于 2025-3-25 13:09:02
http://reply.papertrans.cn/87/8628/862714/862714_23.pngProject 发表于 2025-3-25 18:57:37
Wim Schoenmaker,Christian Strohm,Kai Bittner,Hans Georg Brachtendorf,Caren Tischendorflson (1959), economists have assumed that any innovation created by one firm provides usable information to other firms at little or no cost, so according to an unpatented innovation the status of a public good. In other terms, the intra-industry technological knowledge transfer requires negligible无能力之人 发表于 2025-3-25 20:55:57
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http://reply.papertrans.cn/87/8628/862714/862714_28.png天赋 发表于 2025-3-26 15:11:34
http://reply.papertrans.cn/87/8628/862714/862714_29.pngglans-penis 发表于 2025-3-26 18:44:04
cellulose, 17 % lignin, and 4 % ash . However, the composition of the banana fibers reported varies widely, and fibers with lignin content as high as 17 % have been reported . In addition to the stem, fibers have also been obtained from the leaf and rachis of the banana plant. Conside