Tàu ngầm chạy bằng sức người
ột công ty tại Nga vừa chế tạo thành công loại tàu ngầm nhỏ hoạt động nhờ sức đạp của người sử dụng.Telegraph cho biết, công ty Marine Innovative Technologies Ltd – đặt trụ sở tại thành phố St Petersburg, Nga – đã phát triển loại tàu ngầm này để bán với giá khoảng 70.000 USD. Công ty khẳng định giá sẽ giảm xuống 21.000 USD nếu khách hàng mua số lượng lớn. Đối tượng khách hàng mà công ty hướng tới là cá nhân và các công ty cung cấp dịch vụ du lịch.
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