We specify data fields via chart'sdataFieldsproperty, which is basically a key-value object. The key is a specific structured field, like sake a value or a name, while value is a string key of a field in data to look for in each data item. TreeMaps support four types of data field...
upward-growing trunk. Oaks are long lived trees, with an average life span of 600 years, which means if a father of a big family grows an oak when he was 25, then his 23rd generation grandsons can still enjoy the shades giving by the same oak. ...
改1:开头要把oak tree整体的印象写出来,争取把每个部分的特点都涵盖在内。 The oak tree, the king of the western world, has the majesty look with its thick trunk and dense leaves which fall away in winter and then appear in the next spring—a cycle repeating for about 600 years. The oak ...
1= Outgroup: An outgroup is used in phylogenetic analyses to figure out where the root of the tree should be placed (and sometimes which character state is ancestral on the tree). An outgroup is a l…
Anatomy of a tea plant茶树的生理结构根 root system茶树根系由主根、侧根和须根组成。主、侧根用来固定茶树，须根又称吸收根，用来吸取水分和营养，再由主、侧根输送到地上部分。茶树的主根可垂直深入土层2米至3米，地下深度远大于地上高度，是名副其实的“根深叶茂”。例句：1、The root system of a tea ...
这意味着每个使用到索引的事务需要对B+tree进行上锁直到提交时间-有限并发的技巧。大量基于闩模式已经被开发出来解决这个问题,并且不需要对索引页加任何锁。这种模式内部的关键点在于所有对树的物理结构(如拆分页)产生变更可以通过一个非事务管理来实现,只要所有并发的事务持续地在叶节点查询正确的数据。这里包含了三种...
The series of vertebrae extending from the base of the skull to the coccyx (tailbone) that forms the supporting axis of the body in vertebrate animals. It encloses and protects the spinal cord and provides a stable attachment for the muscles of the trunk. Also calledbackbone,spinal column,sp...
The real founders of plant anatomy, however, are considered to be the Italian biologist M. Malpighi and the English botanist N. Grew, who published the first (1675–79) and the second (1682) works on this subject; in these works the results of a systematic microscopic study of plant ...
students arranging tree limb pieces in the correct order from the trunk to the tip of the limb, measuring the pieces, determining the age of a tree limb by its rings, identifying factors that affect the number and size of the rings, and drawing specific parts of tree limbs as an ...
The Anatomy of a Tree Majestic and towering, oak trees (Quercus species) are valued for their wood, appearance, fruit and importance to wildlife. Thus, it is the undisputed king of the western world. It is known for its lobed leaves and the large cap of its acorn, a nut found on all...