问题产生的根缘在外贸公司。
从实际勘探角度而言，仅根缘气藏（深盆气藏）和常规气藏具有工业勘探价值。
In actual exploration, only source-contacting gas(deep basin gas) and conventional gas reservoirs have commercial value.
用病菌培养滤液对幼苗浸根可使烟草幼苗叶片快速萎蔫，叶缘干缩。
Quick wilting of tobacco seedling was resulted from cultured filtrates by seedling root-soaking. Wilting symptom appeared and leaf margin dried-up.
方法在第一磨牙带环上焊接一控根移动杆，其杆向后延伸紧贴第二磨牙牙冠颈缘上。
Methods the first molar was welded with a molar root movement controller, which extending backward and clinging to the edge of second molar dental cervix.
水之源，缘之根。
方法分别制作两种桩核冠修复体比较其桩核折断、根管折断、桩松动脱落、颈缘等情况。
Methods:Two kinds of pile nuclear crown prosthesis were made and the break of pile nuclear and root canal, the fall off of the pile and cervical margin were compared.
目的观察牙冠延长术治疗断缘位于龈下的冠根联合折断牙的临床效果。
Objective:To observe the clinical effect of tooth extrusion with progressive methods for anterior teeth with crown-root fracture.
不同生长季节不同林型的根际蔗糖酶活性均高于林缘，差异均显著。
Enzymatic activity of invertase of root is higher than it on the forest edge, the differences are obvious.
不同生长季节不同林型的根际蔗糖酶活性均高于林缘，差异均显著。
Enzymatic activity of invertase of root is higher than it on the forest edge, the differences are obvious.
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