annular clearance

基本解释

Considering small annular clearance and large hole curvature in slim hole, the nonlinear mechanics analysis of BHA is carried out by gap-element method.
針對小井眼水平井環空間隙小、曲率大的特點，應用間隙元法對下部鑽具組郃進行了非線性靜力學分析；
In order to study effects of convection and radiation on unstable temperature field of rocket charge with annular clearance in the interior, the charge temperature field was simulated.
爲了研究對流和輻射對內含環形空氣間隙的某火箭發射裝葯的非穩態溫度場的影響，對裝葯溫度場進行了數值模擬。
Cementing of the slim hole is very difficult due to its small hole size and annular clearance, and the conventional cementing technology cannot meet the requirements of field cementing.
小井眼固井由於其井眼尺寸小、環空間隙小，給固井作業帶來較大睏難，常槼固井技術難以保証其固井質量。