Even in newer thin-film technologies, high-volume production has been difficult.
Even in newer thin-film technologies, high-volume production has been difficult.
即使现在使用新型薄膜技术，大批量生产仍然是件难事。
Even in newer thin-film technologies, high-volume production has been difficult.
即使现在使用新型薄膜技术，大批量生产仍然是件难事。