求翻译：现在，我国已经培育出许多核桃优良品种，如山西的“光皮绵核桃”，果形圆大，壳纹较浅，果仁洁白，出仁率达58%；新疆库车出产的“纸皮核桃”，其壳薄如纸，轻轻一敲就可取肉，种仁含油率高达70%；还有河北昌黎的“露仁核桃”、河北卢龙的“石门核桃”，皆享有盛誉，可供我们选择。是什么意思？

Now, China has cultivation out many Walnut fine varieties, as Shanxi of "light skin woolly walnut", fruit shaped round large, shell sheath more shallow, nuts white, out Yan rate up 58%; Xinjiang kuqa produced of "paper skin walnut", its shell thin as paper, gently a knock on desirable meat, species Yan containing oil rate up to 70%; also has Hebei Changli of "luren walnut", and Hebei Lu lung of "shimen walnut", are renowned, can for we select.