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Chapter 3

Wood

木材简介
木材简介
Trees, the source of wood, have a trunk enveloped by a shielding layer of dead bark. Under the dead outer bark is living bark. Next is the cambium, then ...
软木和硬木
软木和硬木
Most cone-bearing trees have needle-like leaves and are classified as softwoods, and most hardwood trees have broad leaves that are shed on a seasonal ...
木料
木料
Long, rectangular pieces of wood used in construction are called lumber. Logs harvested from trees are debarked and repeatedly fed through an automated ...
木料的结构特性和尺寸
木料的结构特性和尺寸
Wood fibers align along the tree's length, giving it up to twenty times higher tensile strength along the fibers than across them. Wood is also ...
木材干燥
木材干燥
Consider an unseasoned lumber used for flooring—the lumber contracts when the moisture evaporates, creating gaps at the joints of the floor. Wood ...
木材表面处理
木材表面处理
Wood surfacing is done to achieve a smoother finish, ensure more accurate dimensions, and make handling safer. Dimensions of wood are marginally increased ...
木材缺陷
木材缺陷
Growth defects in wood include knots, which are formed where branches connect to the tree trunk, knotholes that result from loose knots falling out, decay ...
木制紧固件
木制紧固件
In wood structures, fasteners hold components in place. Connection strength mainly depends on direct member bearing. Different fasteners, like nails, are ...
单板
单板
Veneer is a thin sheet of wood that is produced with a thickness of roughly one-eighth of an inch or less. Positioning a log into a large lathe and ...
木制品
木制品
Wood products are formed by bonding wood strands, veneers, lumber, and waste materials like wood shreds for structural and nonstructural applications. ...
木板产品
木板产品
Standard wood panels used for flooring, siding, and roofing have dimensions of 4 feet by 8 feet in width and length, and their thickness can range from ...
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