If these drugs are stopped abruptly then some withdrawal symptoms may occur.如果突然停服这些药，则可能出现一些戒断症状。Keep a pad handy to jot down queries as they occur.手边放一本便笺簿，以便有问题时随时记下。Nitrates are chemicals that occur naturally in wate...
An implantation can occur only under certain proper conditions.植入只有在某些合适的条件下才能够发生.Most of the manipulations occur instead in the etheric or astral planes.大部分操控反之发生在以太或星光层.Apogean tides occur when the moon is at the apoge...
棉纤维的最内层组织叫中腔.The innermost region of cotton is called lumen.光学显微镜还可以用来研究棉纤维的次生层.Light microscopy has also been useful in studies on the secondary wall of the cotton fiber.以棉纤维为原料,合成了一种新型推进剂用含能黏合剂纤维素醚硝酸酯.Cellulose ether n...