pull center 中文意思是什麼
pull center
解釋
拉力中心-
Axel jordache rowed slowly out toward the center of the river, feeling the pull of the current.
阿克塞爾喬達虛慢慢地向河中央劃去，他感覺到潮水的阻力。 -
Construction of flat tunnel of large span at extra - shallow depth must be conducted on the principle that advance grouting should be strictly performed before excavation and length of pull at one time should be short, together with reinforced support, immediate closing and constant monitoring and surveying. that preceding pilot tunnels, large - volume excavation divided into small ones, excavation of flank before that of center, upper before lower, arch before wall etc is a good method which could effectively reduce surface subsidence and its adverse effect on adjacent buildings, in addition, some other measures are also taken to lessen blast - induced vibration in the ground and surrounding structures. in a word, all means and steps mentioned above have already proved effective and practicable in practice
軟弱大跨超淺埋扁平隧道必須按「管超前，嚴注漿，多分部、短開挖、強支護、快封閉，勤量測」的施工原則進行施工，採用「眼鏡超前，化大為小，先側后中，先上後下，先拱后墻」的施工方法控制地表沉降和對周邊建築物的影響；採用「多分部，化大為小，短進尺，密布眼，弱裝藥，設減振槽」 ，控制爆破振動，經過實踐證明，這些方法都是行之有效的。 -
To remove spring mechanism, grasp the screwdriver at the center and pull complete assembly straight out and store in a safe place
拆卸彈簧裝置，要抓住螺絲起子的中心，將整個總成筆直拔出，放置在安全位置。 -
For push - pull compounds, many researches have indicate that, organic conjugated molecule tpa cross section relate to not only molecule length, center property, substitutions strength but also substitutions " symmetry, molecule dimension and so on
對于有中心鏈的推拉型分子，已有的研究結果表明：有機共軛分子雙光子吸收截面的大小與碩士學位論文中文摘要分子長度、 。中心環分的特性、官能團的供吸電子能力以及官能團對稱性、分子的維度等諸多因素有關。
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